Which LX chassis is it? The 512MB variety (part number 50004942) can run the current releases. If it's the 256MB version, yes, you'll need to go up to 9.0 and swap in an MXE-II. The MXE-II runs 512MB as well, so you can get up to current software without yet another controller swap to the III, unless you have a specific need, like you want to use the SATA drives or an SSD.