Product comparison · 2 interface cards/adapters

HP 517721-B21 interface cards/adapter Internal vs StarTech.com Adapter and Docking Station

Key differences

Host interface
- 517721-B21 interface cards/adapter Internal:PCI
- Adapter and Docking Station:USB
Width
- 517721-B21 interface cards/adapter Internal:36.5 mm
- Adapter and Docking Station:69.8 mm
Depth
- 517721-B21 interface cards/adapter Internal:222.2 mm
- Adapter and Docking Station:203 mm
Height
- 517721-B21 interface cards/adapter Internal:287 mm
- Adapter and Docking Station:19.1 mm
Weight
- 517721-B21 interface cards/adapter Internal:680 g
- Adapter and Docking Station:700 g

Differences highlightedShow differences only

Comparison of 517721-B21, Adapter and Docking Station
12 specifications	A HP 517721-B21 interface cards/adapter Internal Model 517721-B21 View product	B StarTech.com Adapter and Docking Station View product
Ports & interfaces1 differ
Host interfaceDiffers	PCI	USB
USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	4
Designidentical
Product colourKnown for one	Unknown — not stated by the source	Black
InternalKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	36.5 mm	69.8 mm
DepthDiffers	222.2 mm	203 mm
HeightDiffers	287 mm	19.1 mm
WeightDiffers	680 g	700 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	480 Mbit/s
Connectivity technologyKnown for one	Unknown — not stated by the source	Wired
Dimensions (WxDxH)Known for one	36.5 x 222.2 x 287 mm	Unknown — not stated by the source
Size (imperial)Known for one	3.66 cm (1.44")	Unknown — not stated by the source

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.