Can't find the second set of pins for my USB drive

At this point, the computer is powered off and I'm ready to add the new hard drive as a second hard drive. Since there is only one hard drive installed at the start of the upgrade, the old hard drive is already installed as the master hard drive on the first IDE cable. The new hard drive is added as the slave hard drive on the first IDE cable (the same IDE cable as the old hard drive, but using the slave IDE connector).

The first step is to set the jumpers on the back of the hard drive into the slave position. These pictures show the back of the hard drive which also contains a label indicating what each jumper settting means.




To get a close-up in which you can actually read the jumper label in the picture, I've taken two separate close-ups of the label and placed them side-by-side with the first showing the left-hand side of the label and the second showing the right-hand side of the label. Clicking on any picture makes an even larger image. For details of what each jumper setting means, see this Deskstar 120GXP Jumper Description at the IBM/Hitachi Storage Technical Support site.



It can be confusing to know how to set the jumpers just from looking at the label. As you read across the left-hand and right-hand pictures, you'll notice that a setting for "DEVICE 0 (MASTER)" appears twice. Same for "DEVICE 1 (SLAVE)". But the first mention applies to "16 HEADS" and the second mention applies to "32GB Clip". The Deskstar 120GXP Jumper Description does a good job of clearing up the confusion, so rather than repeat it here I'll just strongly recommend you give it a look.

Here are links to jumper information for other popuplar hard drive manufacturers. Western Digital Jumper Setting Information Maxtor. Once there, click on the particular hard drive model. Then select "Jumper Settings" and/or "Jumper Guide" in the [Technical Specifications] field. Seagate Jumper Setting Information. Look near the bottom of the page.
The default, shipped, jumper setting for the IBM Deskstar 120GXP 80GB jumpers is in the "16 HEAD", "DEVICE 0 (MASTER)" position and this is how mine arrived. Here's a close-up showing the jumpers circled in red. The IBM Deskstar 120GXP 80GB hard drive has nine jumper pins and two jumpers. The jumpers are white and rectangular in shape and are shown inserted over two pairs of pins. Notice the pins covered by the jumpers match the jumper label diagram as shown in the side-by-side pictures for "DEVICE 0 (MASTER)" next to "16 HEADS" . This is the correct jumper setting to use for the hard drive after the hard drive has been cloned and it is ready to become the Master hard drive.





But at this point in the hard drive upgrade procedure the new had drive is being added to my computer as the slave hard drive. Although the jumpers are small, you should be able to use just your fingers and move the jumpers such they are set into the slave position. In my case, that means setting them as shown here. Again, it can be confusing because the same picture shows, and right above the jumpers themselves, a jumper diagram labeled "DEVICE 1 (SLAVE)" which shows a different jumper setting. But that "DEVICE 1 (SLAVE)" jumper setting is for "32GB CLIP". Some computers (i.e., older computers) cannot use the whole 80GB and this jumper setting "clips" the hard drive down to a 32GB slave hard drive. My computer can use the full capacity of the hard drive. You'll notice the jumper positions in this picture match the jumper diagram for "DEVICE 1 (SLAVE)" next to "16 HEADS" shown in the previous side-by-side pictures.



Not all hard drives have the same jumper options and labeling as the Deskstar 120GXP. For example, here is a Western Digital WD1200JB (120GB) hard drive. Notice that the labeling is on top of the hard drive rather than on the rear. In addiition, there is only one jumper since the Western Digital does not support re-configuring the number of heads in the drive or the total size of the drive.









Hard Drive Upgrade Install Guide
The hard drive has holes on the side which are used for the mounting screws as shown here. Like most hard drives, the IBM Deskstar 120GXP 80GB has places for 6 screws, three on each side. On the IBM Deskstar 120GXP 80GB hard drive (and this was also true for my old IBM Deskstar 75GXP 45GB hard drive), some screws could be longer than others. In fact, three of the six screws could be longer since they had more clearance to the hard drive itself. For my hard drive upgrade and install, I used a total of six round-head machine screws, size 6-32. Three of the screws were 1/4 inch in length and three of the screws were 3/8 inch in length. Click on the picture to see it enlarged.




Here's a picture taken inside My Super PC before the new hard drive is installed. The case I use, the Antec KS-282, holds the 3.5 inch drives such as the hard drives inside a "drive cage". The drive cage is handy since it makes installing the hard drives a little easier. This picture shows the drive cage circled in red and the old hard drive which will eventually be replaced circled in blue. Click on the picture to see it enlarged.




Here's a closer view showing the contents of the drive cage before the new hard drive is installed and still containing the old hard drive. The backside of the old hard drive looks similar to the backside of the new had drive since both are IBM Deskstar hard drives, just different models. You can see the backside of the hard drive is in three sections. The leftmost section is where the IDE cable connects. The jumper pins are in the middle. You can see the jumpers on the old drive are set in the master position, which makes sense since it's the only hard drive in My Super PC. The rightmost section is for the power connector. Click on the picture to see it enlarged.




Install The Second Hard DriveLet's look again at the interior shot. I've circled the slave IDE connector. There are three connectors on the IDE cable and they are color coded. I've circled in red the gray connector on the IDE cable. This is the connector for the slave hard drive. The master hard drive connector is black and is still plugged into the old hard drive in the drive cage. The connector on the IDE cable which connects to the motherboard is colored blue. Click on the picture to see the picture enlarged.





The new hard drive will plug into this gray connector as the slave device. And you'll need a free 4-pin power connector like the one shown to connect the new hard drive to the power supply. Click on any picture to enlarge it. Like many things that connect inside the computer, both the IDE connector (the gray one, in this case) and the power connector are "keyed" by their shapes or some other means so that they cannot be plugged in "upside down". For example, if you enlarge the picture of the gray connector it's easy to see that the center of the connector includes a plastic bulge and a blocked out pin receptable to prevent it from being plugged in incorrectly.





This picture shows the backside of the hard drive where the connectors plug in. There are three sections on the backside of the hard drive. The leftmost section circled in red is where the IDE cable connects. The jumper pins are in the middle. The rightmost section circled in blue is for the power connector. Click on the picture to see it enlarged.