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From: "larry moe 'n curly" <larrymoencurly@my-deja.com>
Newsgroups: comp.sys.ibm.pc.hardware.storage
Subject: Re: SATA 2.0 backward compatibility?
Date: Sat, 19 Mar 2011 11:59:24 -0700 (PDT)
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N.Morrow wrote:
>
> I have a 4 year old HP DV1738 laptop and I would like to install a larger
> hard drive in it. The current drive is a Fujitsu MHV2100BH, 100GB, SATA 1.0,
> 1.5Gb/s. The majority of SATA drives available now are SATA 2.0 with 3Gb/s
> transfer speed. I can't seem to find any information on the backward
> compatibility of SATA 2.0 drives. I think that some drives have a jumper to
> restrict transfer speed to 1.5Gb/s but I'm not seeing that on all of them.
> It would be nice to be able to use a SATA 2.0 drive because of the selection
> available and low prices.
>
> So, has anyone had success in replacing a SATA 1.0 drive with a SATA 2.0
> drive?

I don't have one, but if it uses an Intel chipset, and I'm pretty sure
it does, it will handle SATA 3Gb/s drives fine.  This is the case with
my Dell Pentium 4 Optiplex GX270 desktop, which is based on an older
Intel chipset.  AFAIK, only older SiS and VIA chipsets (VIA VT6420,
VT8237, VT8237R, VT8237R+, VT8237A, but VT8237S and VT6421A are OK)
can't handle SATA 3Gb/s drives.

Seagate drives can be configured for 1.5Gb/s or 3.0Gb/s maximum speed
with a jumper, as can Western Digital desktop drives but not WD
notebook drives (WD notebooks can't be changed), while Hitachi and
Samsung drives require running a program to change their speed
limits.