22
MODULAR PARALLEL ADAPTERS AND MODULAR MEDIA UNITS
3.4.2 U
SING AN
E
XTERNAL
AC P
OWER
S
UPPLY
(O
PTIONAL
)
If you’d rather, you can use an AC power supply with the
Modular Parallel Adapter. The Adapter doesn’t come
with a power supply, but is compatible with standard
non-regulated power supplies that output 4 to 20 VDC at
500 mA on a center-positive barrel plug.
To install such a power supply, plug its output cable
into the small round socket on the back of the Modular
Parallel Adapter, as shown in Figure 3-7. Plug the power
supply’s transformer (if it’s a wallmount type) or its
input cord (if it’s an inline type) into any standard
electrical outlet. The Adapter’s red Power LED should
then light up.
Figure 3-7. Attaching an AC power supply to the Adapter
(wallmount 115-VAC supply shown).
Power LED
Activity LED
