How Do I Add Another SATA HDD ? Only got room for 2?

Faladu said:

OP, what's the born on date on that HD you removed, some date is likely on it's sticker or a code.

If you plugged it onto that USB/SATA adaptor (power and the USB) and connect it and it doesn't show up, it's probably bad drive electronics having rendered it a paperweight, and I wouldn't trust data back to it anyway if it's years old.

$100 USD buys an internal 7200RPM 2TB Seagate drive, I replaced 2 smallers ones with those and running great, nice to be SATA III/6gig drives, also at that price.

SATAs don't split, you can get PCI cards with secondary SATA controller and have heard of HD slot brackets to hold a HD in place in cases as well.

If just holding DATA that doesn't need to be available 24/7 like movies or MP3's, a USB external is a good solution, very bad speed wise if it's going to be written to all the time, thus the recommendation for internal drives made to take the abuse.

Thats the thing, Money is hard at moment

I won't be using it again, Like you said.. Don't trust it.

The date code is: 10156 and using the Seagate Date Code Calculator the dates showing: 2009-10-13 so 4 years old.

Also attached a picture of the HDD.

I'm not sure if you ever ran the SeaTools for DOS diagnostic utility, as this thread is too confusing for me...
If I had this issue, I would run the SeaTools DOS utility to make sure the HD is dead, or see if it can be fixed.
The $ cost for using SeaTools for DOS is 1 blank CD, for burning the bootable disc.
It's your PC, your money, your choice.

The quote below is from Seagate regarding HDs returned for replacement...
Source: SeaTools for DOS Guide (link) at SeaTools | Seagate

After testing, a large percentage of the drives returned to Seagate
for warranty replacement are perfectly good drives with "No Problem
Found" (NPF). Returning a drive for warranty service means system
downtime and inconvenience for you in packing and returning your drive
product. Before you send in a drive, it is in your best interest to
determine if a replacement drive is really necessary. This hard disc
diagnostic utility will help you make that determination and possibly
save you time and money and preserve your data.
Some typical reasons for No Problem Found are:
* File System Corruption
* Driver Corruption
* Broken Master Boot Record
* Virus and Trojan Attack
* Spyware, Adware and Keystroke loggers
* Hardware Conflicts