Product comparison · 2 interface cards/adapters

StarTech.com 2 Port RS232 PCI Express Serial Card w/ Breakout Cable vs StarTech.com 4 Independent Port PCI Express USB 2.0 Adapter Card

Key differences

Host interface
- 2 Port RS232 PCI Express Serial Card w/ Breakout Cable:ExpressCard
- 4 Independent Port PCI Express USB 2.0 Adapter Card:USB
Weight
- 2 Port RS232 PCI Express Serial Card w/ Breakout Cable:40 g
- 4 Independent Port PCI Express USB 2.0 Adapter Card:50 g
Package width
- 2 Port RS232 PCI Express Serial Card w/ Breakout Cable:38 mm
- 4 Independent Port PCI Express USB 2.0 Adapter Card:37.5 mm
Package height
- 2 Port RS232 PCI Express Serial Card w/ Breakout Cable:138 mm
- 4 Independent Port PCI Express USB 2.0 Adapter Card:137.5 mm

Differences highlightedShow differences only

Comparison of PEX2S552B, PEXUSB400
10 specifications	A StarTech.com 2 Port RS232 PCI Express Serial Card w/ Breakout Cable Model PEX2S552B View product	B StarTech.com 4 Independent Port PCI Express USB 2.0 Adapter Card Model PEXUSB400 View product
Ports & interfaces1 differ
Host interfaceDiffers	ExpressCard	USB
Serial ports quantityKnown for one	Unknown — not stated by the source	4
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	40 g	50 g
Packaging data2 differ
Package widthDiffers	38 mm	37.5 mm
Package heightDiffers	138 mm	137.5 mm
Other features1 differ
Data transfer rateKnown for one	250 Mbit/s	Unknown — not stated by the source
Compatible operating systemsDiffers	DOS, Windows 95/ 98SE/ 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2, Linux, Mac OS 10.4.x Windows XP Embedded/ POS Ready 2009/ Embedded System 2009 OS/ CE 5.0/ CE 6.0	Windows 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2, Linux, and Mac OS 10.4.x

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.