I have tried 2 cards. A 6 port card with an nvidia chip, and a 5 port NEC card
both worked well once I discarded a faulty usb cable to a hub I was using.
The NVidia chipped card is the MP5273 (6)
http://www.chronos.com.tw/_products_061 ... 5273-6.htm
PCI 6 PORT USB 2.0 CARD
One EHCI USB 2.0 and three OHCI USB 1.1 Host Controllers for supporting up to six USB Ports.
Supports HS (480Mbits/sec), FS (12Mbits/sec) and LS (1.5Mbits/sec) data transfer rate.
Compliant with PCI specification 2.2.
Supports up to 33 MHz PCI interface clock.
Supports PCI bus power management specification 1.1.
High performance PCI bus master.
2.5 V core, 3.3 V I/O, 5V tolerant input.
128-pin PQFP Package.
The 5 port PCI card P/N: MM-U2NEC101-4E1I
http://www.aliexpress.com/store/900661/ ... ipset.html
I have had a printer, camera, and one or other of 4 usb2 hubs connected and all work fine on two A1 XEs
Writing up to 3GB in one hit, no lockups or crashes - no numbers sorry.
Impressions: Writing 3GB still seems to drag along, lets agitate for USB3
Copying from the card is very much faster, smaller files read or write in a flash.
For the record the hubs tested with and without power are
I-rocks 4 port hub and card reader
I-rocks 3port hub
DSE 7 port hub
Aten 4 port magnetic hub (unpowered only)
SSK SB reader
1 GB, 4GB SB cards; 2GB, 4GB, 8GB flash drives.