JJPlus ExpandarMax9 (NR25UA5)

multiple revisions of this device, use caution

abgn (AN300)
2.4/5GHz High Power 11n USB Adapter
Platform
Brand • Model • Rev	JJPlus ExpandarMax9
Interface	USB 2.0
Connector	Female Mini-B
Form factor	corded (modular) adapter
FCCID	none specified
Chip1	Ralink RT2770
Chip2	Ralink RT2750
OUI: 00:15:61 (-, 12 W)
Antenna Connection	RP-SMA
MIMO status	1x2:2
Wireless Standards	IEEE 802.11a/b/g/n
802.11n	up to 150/150 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
802.11a	up to 54 Mbps
Operating Frequency	2.4 or 5 GHz
Other
Manuf/OEM/ODM	JJPlus
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)
Chip1 brand Chip2 brand JJPlus ExpandarMax9 (NR25UA5) Ralink Ralink JJPlus ExpandarPro2 Realtek Realtek

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

For a list of all currently documented JJPlus device with specifications, see JJPlus.

• 150 Mbps - 1SS 5GHz 802.11n (40MHz chan.),

• 150 Mbps - 1SS 2.4GHz 802.11n (40MHz chan.) = AN300 class

Overview

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

Additional specifications

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)

Links of Interest

Datasheet