diff --git a/Transceiver-Comparison.md b/Transceiver-Comparison.md
index 72d7877..23154ce 100644
--- a/Transceiver-Comparison.md
+++ b/Transceiver-Comparison.md
@@ -1,15 +1,19 @@
 - RaSCSI Original Version
   - [SN74LS641-1](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LS641-1DW?qs=SL3LIuy2dWxXHvPKLk%252BfLw%3D%3D)
+  - [Data Sheet](https://www.ti.com/lit/ds/symlink/sn74ls641.pdf)
   - Cost: $3.30
   - Qty Needed: 4
+  - Note: VCC is 5v
 - [Scuznet](https://github.com/saybur/scuznet)
   - [SN74LVTH126DR](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LVTH126DR/?qs=sGAEpiMZZMtYFXwiBRPs0%252b5WI0cyeyLc)
   - Cost: $0.64
   - Qty Needed: 4
 - Scsi2SD - According to [LC-SCSI](https://github.com/pgodwin/LC-SCSI/wiki)
   - [SN74LVT245B](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LVT245BPWR?qs=afYny40WCj1v38f4br9Q%2Fg%3D%3D)
+  - [Data Sheet](https://www.ti.com/lit/ds/symlink/sn74lvt245b.pdf)
   - Cost: $0.90
   - Qty Needed: 4
+  - Note: VCC is 3.3v
 
 
 Other parts