Panasonic toughbook doesn't say a lot. However, even if you are saddled with an old styled PATA connector, you are not out of luck. There are PATA http://www.newegg.com/Product/Produc...=-1&isNodeId=1 drives available, for some price. Most importantly there is an adapter http://www.newegg.com/Product/Produc...9SIA1K60RX7223 Edit: wrong link, I meant http://www.amazon.com/gp/product/B004FD5BNE/ to convert any 1.8" SATA disk to the old 44 pin standard. The ThinkPad T400s used these 1.8" uSATA drivers and there are aplenty SSDs for it on eBay for a reasonable price. If you pick a used one, make sure the seller properly erases them with http://support.lenovo.com/en_US/deta...cID=MIGR-68369 this utility (nope, format, fdisk etc is not going to cut it) cos you'll hard time doing it but other than that, a used SSD is most likely fine.