air-ap4800-e-k9 eol. Model. air-ap4800-e-k9 eol

 
 Modelair-ap4800-e-k9 eol 11ac Dual Band Access Points 5725-5850 MHz Against the following Specifications: CFR47 Part 15

Providing quality memory products since 1986. Dual-band mode: 2. This document is Cisco Public Information. The AP seems to be stuck in a boot cycle. SKU: AIR-AP4800-A-K9C Categories: 802. Cisco Aironet 340 Series. 11ac Wave 2, the 1810W Series provides a data rate of up to 867 Mbps on the 5-GHz radio, exceeding the data rates offered by today’s high-end 802. 1 EN 301 489. 11ac W2 AP w/CA; 4x4:3; Ext Ant; 2xGbE, E Domain See Product Migration Options section for details. If you want support. $5. 11a/b/g/n/ac, E Regulatory Domain THÔNG SỐ KỸ THUẬT CỦA AIR-AP4800-E-K9Cisco announces the end-of-life for the Cisco Wireless Software Version 8. Cisco Systems, Inc. AIR-AP4800-E-K9C là AP phân tích 802. High-Quality Repairs. AIR-AP4800-X-K9. The last day to order the affected product(s) is April 30, 2019. Detailed Channels and Maximum Power Settings for Cisco 1700 Series Access Points. These release notes are updated as needed to provide information about new features, caveats, potential software deferrals, and related documents. The Update Devices confirmation popup appears. 3. 6. I have plugged the AP into a port on a POE switch and set the port to the correct VLAN. We provide fast shipping and free tech support. Cisco Aironet 1200 Series Mounting Bracket Plate Wall Ceiling Mount With Screws. 1. French - Canadian. Problem 1: The controller time is outside the certificate validity interval. 4200G 12-Port, 4200G 24-Port, 4500 26-Port, 6080, Baseline 2226-SFP Plus, Baseline 2250-SFP Plus, Baseline 2426 PWR Plus, Baseline 2920-SFP Plus, Baseline 2928-HPWR Plus, Baseline 2928-PWR Plus, Baseline 2928-SFP Plus, Baseline 2952-SFP Plus, Baseline S2226, Baseline S2226 Plus, Baseline S2250 Plus, Baseline. 11ac W2 Analytics AP w/CA; 4×3:3; Location; mGig -A Domain. More Details. 11n/ac 2. Find quality wireless networking equipment products at discounted prices. Table 1 describes the end-of-life milestones, definitions, and. 思科支持Cisco Aironet 2800e和Cisco Aironet 2800i接入点,但不再销售。. End-of-Life and End-of-Sale Notices. The Cisco Aironet 4800 Access Point is packed with an abundance of features that offer users a better experience, top-notch security, and high-speed connectivity. Router-switch. 00 New. Table 1 describes the end-of-life milestones, definitions, and. Thông tin chi tiết sản phẩm Cisco AP 4800 series cung. It operates on the 802. Huge stock of current and EOL products available to ship today; Fully tested with a choice of warranties available for peace of mind purchasing;PriceToMe announces the end-of-sale and end-of-life. com, a global distributor of electronics components. Learn how to install, connect, and troubleshoot your Aironet 4800 in minutes. As soon as it resolved the NTP IP AP's registered and came up. com 2 OVERVIEW TheCisco®Aironet®4800 Access Pointis packedwith anabundanceoffeaturesthatofferusers a better experience, top-notch security, and high. For customers with active and paid service and support contracts, support will be available under the terms and conditions of customers' service contract. 4800 won't work with WiSM2. Cisco Aironet 802. See Product Migration Options section for details. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. 2Gbps, 802. Support for second-generation 802. Cisco announces the end-of-sale and end-of-life dates for the Cisco AP700 Series Access Points. For a quote or to request more information, please complete the form. 11ac Wave 2 Access Points, Cisco 4800 Access Points, Indoor Access Points, Wireless. 3 wordt uitgevoerd; De informatie in dit document is gebaseerd op de apparaten in een specifieke laboratoriumomgeving. Cisco Catalyst 9120AX Series Access Points -Check AIR-AP4800-E-K9 price and buy Cisco Aironet 4800 Series Access Points with best discount. The last day to order the affected product (s) is July 26, 2013. 11ac Wave 2; 3x3:2SS; Int Ant; E Reg Domain See Product Migration Options section for details. The last day to order the affected product(s) is March 20, 2019. Problem 4: There is a certificate or public key corruption on the AP. 11ac Wave 2 Cisco Aironet Series access point (AP) with an in-built software-based wireless controller (WLC) managing other APs in the network. AIR-AP4800-A-K9 . 6. Find quality wireless networking equipment products at discounted prices. AIR-AP4800-E-K9, a Cisco Aironet 4800 802. The 2800 Series is a component of. It's easy to migrate to the Cisco Catalyst 9100 Family of Access Points, which offer greater performance and flexibility. com, a global distributor of electronics components. Local), Defense (Military, Air Force, Navy), Universities, Schools and. 文档. Please use AIR-AP4800-E-K9 . 11n standard. End-of-Life Milestones and Dates for the Cisco Aironet 2600 Series Milestone Definition Date End-of-Life Announcement Date The date the document that announces the end-of-sale and end-of-life of a product is distributed to the general public. 11ac Dual Band Access Points 5725-5850 MHz Against the following Specifications: CFR47 Part 15. 7. 3. Providing quality memory products since 1986. 11ac W2 Analytics AP w/CA; 4×3:3; Location; mGig -E Domain. Getting Started Guide: Cisco Aironet 702W Series Access Points. Explore our database of over 20,000 parts & never miss a critical date again. We need to stay up to date for security reasons, however I need. Find accurate end of life & end of service life dates for Cisco AIR-AP4800-E hardware. Contact Service Express. Table 1 describes the. English. SKU. Return to Top. Explore our database of over 20,000 parts & never miss a critical date again. Explore our database of over 20,000 parts & never miss a critical date again. AIR-AP4800-B-K9-RF. AIR-AP1042N-x-K9: Dual-band Standalone 802. April 18, 2018. Router-switch. AIR-AP4800-E-K9. 11a/b/g/n/ac, configurable Cisco Smart Net Total Care ® Service for the Aironet 4800 with internal antennas AIR-AP4800-E-K9C Cisco Aironet Mobility Express 4800 Series See Product Migration Options section for details. All of the devices used in this document started with a cleared (default) configuration. Table 1 describes the. The last day to order the affected product(s) is April 30, 2019. With 802. Any switch supporting Multigigbit (mGig) should be able to supply uPoE over 32W. End-of-life milestonesCheck AIR AP4800 price from the latest Cisco price list 2022. End-of-Sale and End-of-Life Announcement for the Cisco AireOS 3504 Wireless Controller. Reviews. . The product is no longer for sale after this date. 151. This report replaces any previously entered teAIR-AP4800-A-K9. End of Vulnerability/Security Support, is security update closing date. The date the document that announces the end-of-sale and end-of-life of a product is distributed to the general public. 170 West Tasman Drive . Buy or Renew. If you have AP with regualtrory doimin - B - (2802I-B-K9) then app AP must come UP if you set the country code US in WLC. 11n WiFi PIDs. AIR-AP3802E-B-K9 802. Cisco Aironet 3800 Series Access Points - Find out why a Cisco product has reached its end of life, what product upgrade and substitution options are available, and when these changes will take effect. With regard to this assessment, the following points should be noted: a) The results contained in this report relate only to the items tested and were obtained in the period betweBuy Cisco Wireless Networking Equipment AIR-AP4800-N-K9. 31-OCT-2022 Details. 0, the upgrade failed on pre-downloaded. Theoretical connection rate: 2. Marketing Information. 11a/b/g. Cisco Catalyst 9115AX Series Access Points - AIR-AP1852E-E-K9C Cisco Aironet Mobility Express 1850 Series See Product Migration Options section for details. This could be cisco, or one of these If you changed the username on the router and can't remember it, try resetting your router. Trang chủ » Cửa hàng » WIFI CISCO » Cisco 4800 Access Point » AIR-AP4800-E-K9. 11n access points. 21-Dec-2022. End-of-life milestones and dates for the Cisco Aironet 4800 Series Access Points Milestone Definition Date End-of-Life Announcement Date The date the document that announces the end-of-sale and end-of-life of a product is distributed to the general public. For customers with active and paid service and support contracts, support will be available under the terms and conditions of customers' service contract. Great training,. 10 Product Bulletin. End-of-Sale Date : HW. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. AIR-AP1832I-K-K9, AIR-AP1832I-K-K9C, AIR-AP1832I-C-K9, AIR-AP1832I-C. • Cisco€AIR-CAP3702I-E-K9 Series AP • Cisco€AIR-AP4800-E-K9€Series AP • Cisco 9800-CL that runs firmware release 17. AIR-AP1542D-D-K9 802. All rights reserved. The last day to order the affected product(s) is February 9, 2018. AIR-AP1010-E-K9 1000 Series 802. com Contact: +971585811786 Free shipping on all UAE orderAs soon as it resolved the NTP IP AP's registered and came up. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. 0 and 8. Internet Group Management Protocol (IGMP)v3 is not supported on Cisco Aironet Wave. AIR-AP4800-E-K9 is the. The last day to order the affected product(s) is April 30, 2019. El punto de acceso Cisco Aironet 4800 es compatible con Cisco, pero ya no se vende. Local), Defense (Military, Air Force, Navy), Universities, Schools and. Cisco announces the end-of-sale and end-of life dates for the Cisco AireOS 3504 Wireless Controller. 英语. 0. End-of-Sale and End-of-Life Announcement for the Cisco AireOS 3504 Wireless Controller. Borderless Networking Switches > Routers > Security >. End of Sale Date : 05/01/2022. AIR-AP4800-B-K9 Cisco Aironet 802. Condition: Factory New. Check part details, parametric & specs updated 31 JUL 2023 and download pdf datasheet from datasheets. É fácil migrar para a família de pontos de acesso Cisco Catalyst 9100, que oferece maior desempenho e flexibilidade. AIR-RM3010L-E-K9= Module d’hyperlocation avec sécurité avancée; Domaine régl. The access point is not accessible via the web interface. Against the following Specifications: LP0002 (2018-01-10) CFR47 Part 15. 2. 11ac W2 Analytics AP w/CA; 4x4:3; Location; mGig -D Domain. 11ac W2 AP w/CA; 4x4:3; Mod; Ext Ant; mGig B Domain See Product Migration Options section for details. 28-AUG-2012. Author: Chris Blair / Allan Beecroft : Tested By: Jose Aguirre ; Approved By:Updated:Mar 13, 2015. Cisco announces the end-of-sale and end-of-life dates for the Cisco 3504 Wireless controller. Manufacturer Cisco Category Network Model No. Description. The Cisco Aironet 4800 Access Point is packed with an abundance of features that offer users a better experience, top-notch security, and high-speed connectivity. Cisco Catalyst 9124AX Series Access Points - AIR. 11ac Wave 2 Cisco Aironet Series access point (AP) with an in-built software-based wireless controller managing other APs in the network. AIR-AP4800-B-K9++. Cisco AIR-CAP3702I-E-K9 Series AP. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Return to Top. 11ac W2 Low - Profile Outdoor AP,AIR-AP1832I-E-K9 802. 9. 11ac Wave 2 performance, high scale, and enhanced system uptime. 11ac Wave 2, được tích hợp nhiều tính năng tiên tiến để mang đến kết nối tốc độ vượt trội và độ bảo mật cao, góp phần nâng cao trải nghiệm không. End-of-Support Date: 2021-03-31 . Aironet 4800 . Products. Cisco AIR-AP4800-E-K9 for $2,027. End-of-Sale and End-of-Life Announcement for the Cisco 3504 Wireless controller. Test Report . 支持终止日期. Cisco announces the end-of-life for the Cisco Wireless Software Version 8. Overview EOL14528 - Amended Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet 4800 Series Access Points. É fácil migrar para a família de pontos de acesso Cisco Catalyst 9100, que oferece maior desempenho e flexibilidade. Regards. com. 11ac Wave 2; 3x3:2SS; Int Ant; E Reg Domain See Product Migration Options section for details. End-of-Life and End-of-Sale Notices Find out why a Cisco product has reached its end of life, what product upgrade and substitution options are available, and when these changes will take effect. The last day to order the affected product(s) is July 3, 2017. Cisco Systems. The last day to order the affected product(s) is December 29, 2016. The last day to order the affected product(s) is May 4, 2018. Ordering the access point. Local), Defense (Military, Air Force, Navy), Universities, Schools and. zip. ap3g3. 11ac. AIR-AP4800-B-K9-RF. Der Cisco Aironet 4800 Access Point wird von Cisco unterstützt, ist jedoch nicht mehr erhältlich. 10 Product Bulletin. Product Details. $1,599. 11ac Wave 2 Cisco Aironet Series access point (AP) with an in-built software-based wireless controller (WLC) managing other APs in the network. It's easy to migrate to the Cisco Catalyst 9100 Family of Access Points, which offer greater performance and flexibility. Will ship when available again. 31-JAN-2027 Details. 11 A/b/g/n/ac 5. Alle apparaten die in dit document worden beschreven, hadden een opgeschoonde (standaard)configuratie. Explore our database of over 20,000 parts & never miss a critical date again. When I look at the documentation, it says that the AIR-AP2802I-B-K9C is "configurable" ExactlyAIR-WLC2006-K9. Alternatieve PID’s voor deze productlijn: AIR-AP4800-B-K9-RF. 00 $ 2,174. 0. End-of-Support Date. Cisco announces the end-of-life for the Cisco Wireless Software Version. See Product Migration Options section for details. AIR-AP4800-F-K9C. 11a/b/g AP w/ Int Antennas, ETSI config AIR-LAP1131AG-E-K9 802. 11a/g/n/ac, wave 2. The Cisco Mobility Express wireless network solution comprises of at least one 802. I am having an issue when upgrading AP AIR-AP4800-S-K9 Mobility Express from 8. 新しい 802. Order a original new cisco aironet 3802i access point at the lowest price. Radio Test Report No: EDCS – 12749695. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. As of January 2021, the. Product Type: Wireless Access Point Wireless LAN Standard: IEEE 802. Customers will continue to receive phone support from the Cisco Small Business Support Center (SBSC) as shown in Table 1 of the EoL bulletin. For example, AIR-AP4800-X-K9. AIR-AP4800-x-K9 (x=K,S) CiscoTổng quan về Wifi Cisco AIR-AP4800-E-K9C Điểm truy cập Wi-Fi Cisco Aironet 4800 rất linh hoạt và cung cấp hầu hết các chức năng của bất kỳ điểm truy cập nào trong ngành. End-of-Sale Date. 11ac W2 Analytics AP w/CA; 4x4:3; Location; mGig -F Domain See Product Migration Options section for details. Domain -FCisco announces the end-of-sale and end-of-life dates for the Cisco Virtual BLE Beacon Solution. 11ac Dual Band Access Points FCC ID: LDKBRB4K1779 5150-5250 MHz Against the following Specifications: CFR47 Part 15. AIR-AP4800-K9-ME-8-8-130-0. 3. Often we would be require to get the Over the Air captures in order to understand and troubleshoot the Wi-Fi behavior. 0 and 8. 0 to 8. AIR-AP4800-E-K9-RF. If no login screen shows up, try finding the correct IP address for your router by Searching for your router. Product Description: Cisco . 11ac W2 w / CA; 4 × 3: 3; Vị trí; Miền mGig -E, có thể định cấu hình. 32 Get Discount: 15: AIR-AP4800-BK9C-RF. Pour obtenir plus d’informations, reportez-vous à la section Options de migration du produit. 此产品行的备用 PID:. Key 1, 2, 3, and 4. The new model taking over the three is the Catalyst 9800 WLC. 25-Jan-2023. Explore our database of over 20,000 parts & never miss a critical date again. Check AIR-AP4800 price from the latest Cisco price list 2022. Bluetooth Low Energy (BLE) 2trang chỦ; giỚi thiỆu; sẢn phẨm. This is the only affected client on the WLC. Cisco 1850 AP series is ideal for small and medium-sized networks. Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet 2600 Series. Menu. با توجه به پشتیبانی اکسس پوینت سیسکو AIR-AP4800-E-K9 از استاندارد 802. Provantage is authorized to only sell this product to a final purchaser or licensee that has acquired it for their own use and not for resale, remarketing or distribution. End-of-life milestones Table 1. 可以轻松迁移到 Cisco Catalyst 9100系列接入点 ,该系列提供更高的性能和灵活性。. 11ac technology. 11ac Wave 2; 3x3:2SS; Int Ant; A Reg Domain - AIR-CAP1702I-A-K9C Cisco Aironet Mobility Express 1700 Series AIR-AP1832I-A-K9C Cisco Aironet Mobility Express 1830 Series - AIR-CAP1702I-ABULK BOM Level AP1700i Bulk PID for A reg domain There is. 09-FEB-2016. 11ac Wave 2 1810w,The Cisco Aironet 2600 Series is a component of the Cisco Unified Wireless Network, which can scale to up to 18,000 access points with full Layer 3 mobility across central or remote locations on the enterprise campus, in branch offices, and at remote sites. Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet 3700 Series Access Points. 11a/g/n/ac), 10 quantity access points Cisco Aironet 2800e Access Point Configurable: Indoor, challenging environments, with external antennas AIR-AP2802E x K9C: Dual band controller based 802. Cisco . The Cisco Aironet 2800e and Cisco Aironet 2800i Access Points are supported by Cisco, but are no longer sold. June 30, 2016 End-of-Sale Date The last date to order the product through Cisco point-of-sale. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. End-of-life milestonesCisco Aironet 3800 シリーズは、新しい 802. Find quality wireless networking equipment products at discounted prices. Table 1. (Also a AP4800_E-K9). 4/5GHz, Indoor, Internal Antenna Chính Hãng Giá Tốt tại ⭐ Hà Nội ⭐ Sài Gòn Đủ CO CQ BH 12 ThángRedcorp# 0918Q317 Article# AIR-AP4800-A-K9. Cisco Catalyst 9115AX Series Access Points - AIR-AP1832I-EBULK. The last day to order the affected product(s) is January 31, 2023. 407 RSS-247 Cisco Systems 170 West Tasman Drive San Jose, CA 95134 Author: Jose Aguirre Tested By: Jose Aguirre Approved By: Gerard. Plug a Category-5 Ethernet cable into the port on the power injector labeled AP. 11a/b/g/n/ac) 10 quantity access points AIR. Provantage Code: CSC8XE4. Full Time K9 Protection & Detection Handlers. AIR-AP4800-D-K9. The Aironet® 4800 makes troubleshooting easier and enhances the context shown in Cisco DNA™ Assurance. 11ac W2 Analytics AP w/CA; 4×3:3; Location; mGig -B Domain, Configurable802. Note: We Are Unable to Sell this Product to Dealers. The Cisco Aironet 1550 Series provides a set of tools that deliver the robust, scalable wireless foundation required to realize the true potential of outdoor wireless mobility: Cisco ClientLink technology to raise uplink and downlink performance of and coverage to existing 802. End-of-life milestones and dates for the Cisco Aironet 4800 Series Access Points Milestone Definition Date End-of-Life Announcement Date The date the document that announces the end-of-sale and end-of-life of a product is distributed to the general public. Cisco announces End of Life (EoL), End of New Service (EoNS) and End of Sale (EoS) products frequently. Cisco ® Aironet ® 2800 シリーズ Wi-Fi アクセス ポイントは業界最高レベルの機能を豊富に備えています。. The AIR-AP1131AG-A-K9 delivers a combined capacity of 108 Mbps, making it powerful, yet unobtrusive. Options. For a quote or to request more information, please complete the form. EOS/EOL Check; SN Check; Download; Product Catalog. #capwap ap ip address <IP ADDR FROM AP> <NETMASK IP ADDR FROM AP>. Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet 1140 Series. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. I am seeing DTLS errors with a unknown ciphersuite. 18-APR-2018 Details. June 30, 2016. From poe+ power machine interface, I dont see how much power is switching, its state poe+ feeding mode. Status LED constantly blue: Wifi-Clients connected -> ok, as expected, Clients are connected normally. Resulta sencillo migrar a la familia de puntos de acceso Cisco Catalyst 9100, que ofrecen un. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. 11ac W2 AP w/CA; 4x4:3; Mod; Ext Ant; mGig -E Domain - AIR-3602E-AC-EK910 3602E AP with 802. 20 Gbit/s Product Family: Aironet 4800 Product Series: 4800 TAA Compliant: No Add AIR-DNA-A. 7. AIR-AP4800-E-K9 là điểm truy cập không dây thuộc dòng sản phẩm Wifi Cisco 4800 Series. See Product Migration Options section for details. Cisco Aironet 1560, 1800, 2800, and 3800 Series Access Points Denial of Service Vulnerability. I changed the AP to "local" mode via a console cable, it rebooted, connected to the WLC and downgraded to the loaded software version and the rest is the same as the 2600, 2700 and 2800 model APs. This product is supported by Cisco, but is no longer being sold. Version I am running is: 8. Cisco announces the end-of-sale Cisco WAP Wireless Access Point . 32 - Cisco Aironet Ieee 802. 25. Buy Cisco Wireless Networking Equipment AIR-AP4800-D-K9. Providing quality memory products since 1986. 9. The AP is receiving an IP address from. 3bz) and one 100/1000BASE-T auto-sensing. Cisco Catalyst 9115AX Series Access Points - AIR-AP1832I-E-K9C Cisco Aironet Mobility Express 1830 Series See Product Migration Options section for details. Enter each key value, and specify whether it is 128 bit or 40 bit. End-of-Sale and End-of-Life Announcement for the Cisco 3504 Wireless controller. Cerberus K9 Solutions Inc, Victoria, British Columbia. Buy Cisco Wireless Networking Equipment AIR-AP4800-T-K9. AIR-AP2802I-E-K9 running with 3504 wireless controller might not have DNA license can i run the same AP AIR-AP2802I-E-K9 with without DNA license on. Radio Resource Management (RRM) for. 11ac W2 Analytics AP w/CA; 4x4:3; Location; mGig -F Domain See Product Migration Options section for details. 11a/b/g/n/ac, F Regulatory Domain Chính Hãng Giá Tốt tại ⭐ Hà Nội ⭐ Sài Gòn Đủ CO CQ BH 12 ThángRadio Test Report No: EDCS – 12749690 Test Report . It features 802. Data Sheets and Literature. In this doc you can see that the AP requires uPOE. Title: About Cisco Mobility Express Author: Unknown Created Date:Approval certificaiton information for Cisco Aironet 4800 Series Access Point, part numbers: AIR-AP4800-E-K9 AIR-AP4800-I-K9 AIR-AP4800-R-K9 AIR-AP4800-E-AIR-AP4800-E-K9C AIR-AP4800-E-K9 = AIR-AP4800-I-K9 = AIR-AP4800-E-K9C = AIR-AP4800-I-K9C = AIR -AP4800-R-K9C = with software version 8 or 9 installed Cisco name 4800 Series. The 1850 Series extends support to a newEDU-AP4800-B-K9-RF. If the switch can only provide 20. Status. 7W. Cisco Catalyst 9130AX Series Access Points -04-23-2020 03:06 PM - edited ‎04-24-2020 05:48 PM. End-of-Support Date. Connect to the AP using a console cable. 11a/b/g/n/ac AIR-AP3802I- x K910: Eco-pack (dual-band 802. It also enables a total aggregate dual-radio data rate of 2. Cisco Aironet™. Cisco ISR 4000 Routers; Cisco ISR 1100 RoutersTỔNG QUAN VỀ CISCO ACCESS POINT AIR-AP4800-E-K9. 11a/b/g/n/ac, E regulatory domain, 2.