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JJPlus ExpandarMax9 (NR25UA5)

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JJPlus ExpandarMax9

Interface: USB

USB 2.0
Connector: Female Mini-B
Form factor tags: corded (modular) adapter

FCC ID: none available

WI1 chip1: Ralink RT2770

WI1 chip2: Ralink RT2750

Probable Linux driver
rt2800usb (in backports) or rt2870sta
(see also passys)

Windows driver
see MediaTek's website
older Ralink drivers have been removed.
see the Wayback Machine
for some older driver sets (filter by EXE/ZIP)

Antenna connector: RP-SMA

abgn, 1x2:2

OUI: 00:15:61 (-, 12 W, 2010)

For a list of all currently documented Ralink chipsets with specifications, see Ralink.

2.4/5GHz High Power 11n USB Adapter

While the JJPlus site quotes the alternative part number as NR25UA5, other sources (more specifically's eBay store) quote it as NR25UAJ.

Additional specifications[edit]

This information is per JJPlus's datasheet.

Typical Receiver Sensitivity w/ 11b rates (more)

  • -87 dBm @ 11M

Typical Receiver Sensitivity w/ 11a rates (more)

  • -74 dBm @ 54M (64-QAM)

Typical Receiver Sensitivity w/ 11g rates (more)

  • -74 dBm @ 54M (64-QAM)