Here's some general information on installing a Toshiba 3401 CD-ROM drive in a 
PS/2 Model 57 or a PS/2 Model 77 that I posted in a recent OS/2 forum message.

The internal Toshiba 3401 CD-ROM drives are available at very attractive prices 
from various dealers who buy them in bulk from Toshiba.  For example, I bought 
mine at '93 Spring Comdex for $419.00.  However, when you buy one of these "bare 
bones" internal drives, you get nothing but the drive and a caddy (and maybe a 
"copy" of the Toshiba manual) -- unless the dealer bundles the drive with other 
stuff like device drivers, a sound card/SCSI adapter, etc.

If you're using OS/2, you don't need the drivers, since OS/2 2.1 includes 
drivers for the 3401 and most SCSI adapter cards.  After a quick selective 
install, you can use this drive with OS/2 and WIN-OS2 applications and with DOS 
applications in a VDM.  Furthermore, if you already have a SCSI interface, you 
don't need the other "extras" either.  (If you want to use the drive under 
native DOS, you will need a driver and MSCDEX.EXE.)  So, these dealer-prepared 
"bundles" might not be such good deals!

However, you probably do need some mounting hardware.  For example, to install 
the Toshiba 3401 in a PS/2 you need mounting rails and, for cosmetic reasons, a 
bezel.  If you have a PS/2 Model 57 or 77, the gizmos that you need are 
available from the IBM Parts Order Center (as parts).  They are designated for 
the Model 57, but they also work for the Model 77.  Here are the part numbers 
prices and descriptions:

   CD-ROM Bezel      85F0008   $16.00   This is very thin outline bezel that 
                                        replaces the blank bezel in the 
                                        computer's front panel and "fills in" 
                                        the space between the 3401's bezel and 
                                        the border of the front panel opening.

   CD-ROM Rail Kit   85F0009   $11.75   This kit contains left and right plastic 
                                        rails, two spring steel inserts and four 
                                        screws -- and yes, the screws do work 
                                        with the 3401!

You can order these parts and charge them to "plastic" by calling the IBM Parts 
Order Center at:

   800-388-7080

The parts don't come with any instructions, but the bezel installs just like the 
blank one you replace, and it will only fit "one way."  The rails are marked 
"left" and "right" and the side with these markings is the outside.  The springs 
install in the rails with the flat side toward the drive.  After installing 
these springs on the rails, simply attach the rails to the sides of the drive 
with the screws (two per rail).

When you look at these parts, you may wonder why they cost you $30.00 (They look 
like they should sell for about $4.95 if you bought them at Radio Shack.), but 
they're worth it --unless you can find a "better deal."

Finally, if you buy one of these "bare bones" drives be sure and get a manual or 
ask for advice on installing the shorting pins that are used to set the SCSI-ID, 
parity, caddy removal, test mode and SCSI termination.  Installing these 
shorting pins is simple, but don't assume that they are installed -- or 
installed correctly!  Mine weren't.  I understand that most dealers will make 
you a copy of the Toshiba manual (which is only a few 8.5" x 11" pages).

That's all folks.  Hope this is useful.  Email me any questions to me.

                                Bill Speights -- CIS ID 71520,1674