Figure 1. IBM 8260 Model 017
1.2.1.2 Payload Area
The payload area provides the housing for 17 media and management modules.
In addition to the 8260 module, you may install all the 8250 modules (except the
Controller module) in an 8260. Once these modules are installed on the 8260,
they will be connected to the backplane.
Certain modules provide you with

per-port switching

capability, which allows you
to connect different ports on the same module to different backplane segments.
Other modules are

module-switching

modules, which means that all the ports on
the module must be connected to the same network segment. The per-port
switching capability is available for both Ethernet and token-ring.
Since the 8260 modules are taller than the 8250 modules, when you install one or
more 8250 modules in the 8260 multiprotocol intelligent switching hub, you must
use the

8250 Adapter Kit

. Depending on the kit that you order, the 8250 adapter
kit enables you to install up to 4, 9 or 16 single-slot 8250 modules or a mixture of
single-slot and dual-slot 8250 modules.
The 8250 adapter kit consists of the following:
48260 Multiprotocol Intelligent Switching Hub