|It sounds like either the card is not working properly, because of a hardware resources conflict or a driver problem, or it's defective. |
If it's defective it won't work properly in any PCI slot in any computer.
Make sure the card is all the way down in it's slot.
Look in Device Manager to see if the card's controller is flagged with a red X or a yellow ? It's listed as a SCSI device.
However, sometimes you don't see that even when it's not working properly.
(E.g. Right click on My Computer - Properties - Hardware - Device Manager)
Consult the Asus manual to see if it states which PCI slot shares it's IRQ with what.
You DO NOT want it in a slot that shares it's IRQ with the video.
If there is any PCI slot that does not share it's IRQ with anything, that's probably the best slot for it to be in.
If the manual doesn't have that, try it in different PCI slots.
The last one next to the center of the mboard is the one most likely to be sharing it's IRQ with the video.
VT6421A card would not work properly until it was installed in a different PCI slot
The VT6241A controller chip t is a relatively old one - first released in 2003.
It CANNOT run SATA II drives at their full max burst speed ! (300mb/sec)
All new and older fairly recent SATA hard drives support SATA II specs.
A few new ones support SATA 3 specs.
It supports the original SATA specs - max burst speed 150mb/sec
You need a card with a NEWER chip in order for it to be able to run SATA II drives at their full burst speed.
A side note.
A SATA hard drive may be rated as having a max burst speed of 150mb/sec or 1.5gb/sec .
A SATA II hard drive may be rated as having a max burst speed of 300mb/sec or 3.0gb/sec .
They're the same thing.
It's actually 150mbytes/sec or 1.5gbits/sec,
or 300mbytes/sec or 3.0gbits/sec .
All SATA controllers use 10 bits per byte, not 8 per byte, when transferring data.
VIA VT6421A Serial RAID Controller
IDE RAID and SATA
Discrete Serial ATA RAID controllers VT6420,VT6421, VT6421A etc.
I found nothing that confirms who made your card or it's model when I searched with a-power sata drive controller VT6421A or similar.
If it has a FCC ID number printed on it, tell us what it is - that can be used to attempt to look up who actually made the card and possibly it's model.
If it has jumpers on the card, this may be of help....
VIA VT6421A SATA PCI Card Jumpers
My VIA PCI 6421A card was bought off ebay. It came with no manual.
This is what it looks like:
Does have a manual that explains how to set the jumpers ?
I can only use 1 of the internal SATA ports and im sure the jumpers enable the other ports.
There are 2 jumper blocks J1 and J2 with a pair of jumpers in each block. Initially from the factory all jumpers are set to connect pin 2 to pin 3 - all up. This sets all SATA connectors to be internal and eSATA is disabled. To enable eSATA port, change all jumpers to be down, shorting pin 1 to pin 2 (on all 4 jumpers). This will disable the internal SATA connector closest to the eSATA connector.
eSata / Sata / IDE PCI RAID Controller Card VIA VT6421A Chip Set
* 1 eSata ports + 2 Sata Port + 1 IDE Port, PCI Interface. Not bootable.
* SATA port trans speed can up to 1.5G (150Mbps). Supports Windows 98 SE, Me, 2000, XP, Vista
* eSata port and left upper SATA port is shared, control by onboard jumper (Instruction is on CD).
* Complies with Serial ATA specification Revision 1.0, not for SATA Version 2.
* Ultra ATA-133 IDE interface Extension to Ultra DMA-133 interface for up to 133MB/s transfer rate.
You should be able to boot from a bootable partition on a hard drive, or from a bootable CD or DVD in an optical drive when the drive is connected to the card
- You MUST be able to select SCSI as a boot device in the mboard's bios Setup Boot Order or similar settings, and it must be listed BEFORE any hard drive
- If you want to install XP on a hard drive connected to the card by booting the computer from an XP CD in an IDE drive, you MUST supply the SATA controller drivers for the VT6421A on a floppy disk after pressing F6 near the beginning of Setup.
(the Via download info above has info about the drivers needed on a floppy.)