ASUS USB-BT21 Mini Bluetooth Dongle vs ASUS USB-BT21 Mini Bluetooth Dongle, Black

Comparison of USB-BT21 Mini Bluetooth Dongle, USB-BT21 Mini Bluetooth Dongle, Black

19 specifications	A ASUS USB-BT21 Mini Bluetooth DongleView product	B ASUS USB-BT21 Mini Bluetooth Dongle, BlackView product
Networkidentical
Wi-Fi bandKnown for one	—Unknown — not stated by the source	Single-band (2.4 GHz)
Frequency rangeKnown for one	—Unknown — not stated by the source	2.4 - 2.4835 GHz
ModulationKnown for one	—Unknown — not stated by the source	GFSK
Maximum operating distanceKnown for one	—Unknown — not stated by the source	10 m
System requirements1 differ
Compatible operating systemsDiffers	Vista Mac Os	Windows 98/98SE/ME/2000/XP/Vista Mac OS X.3 +
Operational conditionsidentical
Operating temperature (T-T)Known for one	—Unknown — not stated by the source	0 - 60 °C
Storage temperature (T-T)Known for one	—Unknown — not stated by the source	-10 - 70 °C
Operating relative humidity (H-H)Known for one	—Unknown — not stated by the source	10 - 90%
Weight & dimensionsidentical
WidthKnown for one	—Unknown — not stated by the source	19.5 mm
DepthKnown for one	—Unknown — not stated by the source	16 mm
HeightKnown for one	—Unknown — not stated by the source	8.1 mm
WeightKnown for one	—Unknown — not stated by the source	22 g
Other featuresidentical
Connector(s)Known for one	—Unknown — not stated by the source	USB A
Link/Act LEDKnown for one	—Unknown — not stated by the source	Yes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.