National Datacomm NWH640

b (B11)
InstantWave High Speed USB Adapter
Platform
Brand • Model • Rev	National Datacomm NWH640
Interface	USB
Connector	USB
FCCID	IOU0640S01
Chipset	Intersil PRISM 2.5
Chip1	Intersil Model?
Chip2	Intersil ISL3685
OUI: none specified
Wireless Standards	IEEE 802.11b
802.11b	up to 11 Mbps
Operating Frequency	2.4 GHz
Probable Linux driver prism2_usb (see also passys)
Windows driver see Intersil/prism2/usb/windows
Retail
FCC approval date	12 September 2001
Country of manuf	Taiwan

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

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

• 11 Mbps - 2.4GHz 802.11b = B11 class

Overview

"ISL37300XU" and "REV. A" is silkscreened on the board in the FCC photos.

This device is likely based on the Intersil ISL37300XU reference design.

Per the FCC test report, this device has an alternate model of NCP140.