Resource limits or conflicts within the OBi. (processor, memory, storage, bus bandwidth)
Resource limits or conflicts within Obihai. (development staff)
And what you ask is non-trivial unless it comes with a mile long list of caveats regarding supported printers and operating systems.
My recommendation is to buy a network printer. Putting a non-network capable printer on the network via any adapter is a crap shoot.
And I have over 20 years of experience with printing and network protocol design and implementation.