Anything "Obsoleted" in 9.0 or higher is just not usable, the entire OS was re-written and I am sure they didn't make kernel modules (the Linux equivalent of drivers) for those hardware devices.
Anything using the Dual Fiber Interface Module (FIM) is obsolete and unsupported.
All DSU's, all NSU's, all Fiber Distributed Peripheral Bays, and all SX-200 Bays. I would also take this to mean Fiber connected ASU's (is there such a thing?) are obsolete, but CIM interfaced ASU's are fine.
DSU's have for most practical purposes been obsolete for some time. NSU's can easily be replaced by Dual T1/E1 modules, or if you have no module spaced available you can use a SIP PRI gateway and convert the PRI to SIP in most cases.