Buffalo 500GB Portable SSD Drive USB 
Product highlights:
- TeraStation 51210RH replacement HDD
- Works with TS51210RH3204 and TS51210RH9612
- 1.7 lbs weight and 4.2 x 6.8 x 1-inch size
- SATA Interface 8 TB replacement drive
- 3.5 inch internal SATA 600 Hard Drive
Buffalo OPHD80H2U5Y 8 TB Internal SATA Hard Drive (3.5-Inch, SATA/600)
These hard drives by Buffalo are direct replacements for TS51210RH3204, TS51210RH9612. It weighs 1.7 lbs and has dimensions of 4.2 x 6.8 x 1-inch. It has a Serial ATA III interface and is fully compatible with TS51210RH3204, TS51210RH9612 as a replacement drive of 8 TB capacity.
Ratings and reviews
Buffalo OPHD80H2U5Y 8 TB Internal SATA Hard Drive (3.5-Inch, SATA/600) 
Buffalo OPHD80H2U5Y 8 TB Internal SATA Hard Drive (3.5-Inch, SATA/600)
SKU: OPHD80H2U5Y