User's Manual

Overview of the AP3935
The AP3935 is designed to extend your Wireless LAN
around indoor locations. The AP3935 supports the 802.11ac
and 802.11n wireless standards, with full backward
compatibility with legacy 802.11a, and 802.11b/g devices.
The AP3935 interoperates fully with Wireless LANs,
including support for VoWLAN, branch office mode, guest
services, RTLS, availability, and mobility features.
Operating Temp: 0 - 50C.
AP3935 models have the following features:
• Radios: 2 radios (2.4 GHz and 5 GHz)
•LEDs: 5 (see Figure 3)
• Power: PoE 802.3at for full performance; (802.3af for low
performance mode) DC power supply (see Table 1).
• Antennas:
– WS-AP3935i: 8 internal single band antenna
assemblies
– WS-AP3935e: 8 external RPSMA antenna connectors
(external antennas must be ordered separately)
• Adjustable mounting brackets for drop ceiling T-bar rail.
Figure 1 3935i Access Point
Figure 2 3935e Access Point
For detailed installation information about the AP3935, see
the ExtremeWireless AP3935 Installation Guide.
Note: The AP3935 is available in both an “i” model (with
internal antennas) and an “e” model (with external
antennas). In this Quick Reference, any reference to
AP3935
applies to both models.
Table 1 shows ways to power the AP3935.
Figure 3 shows the LEDs on the front of the AP3935e.
Figure 3 LEDs on AP Front Face
Figure 4 3935e Access Point bottom view
Mounting and Connecting the AP
Mounting brackets are included for quick and easy
mounting of the AP3935 drop ceilings. The wall bracket as
shown in Figure 7 is optional.
Use these instructions as guidelines for mounting and
connecting the AP3935 easily and safely.
Mount the AP no more than 2 ft. from a T-bar support.
Table 1 Powering the AP3935

Power
Source
Description
Power over
Ethernet
(PoE)
Power is provided through two Ethernet ports (LAN
port). This is the preferred method of powering the
AP on ceiling and wall installations.
External 12V
DC power
supply
(optional)
The AP3935 can also be powered by an external DC
power supply plugged into an AC source. Plug the
supply’s input jack into the DC-In port (Callout 4 in
Figure 4).
1 Status 4 Radio 1 (5 GHz)
2 LAN 1 (Ethernet 1) 5 Radio 2 (2.4 GHz)
3 LAN 2 (Ethernet 2)
1 Reset Button 3 LAN Ethernet Ports 1 and 2
2 Console Port 4 External Power DC 12V
Electrical Hazard: Only qualified personnel should perform
installation procedures.
Mounting on a Drop Ceiling
1 Slide the ceiling mount bracket base into the metal base.
The locking tab fits into the groove in the fins. See
Figure 5.
Figure 5 Attaching Mount Bracket to the Access Point
2 Remove the ceiling panels around the drop ceiling T-bar
rails and verify that the Ethernet cable can reach the AP
at the mounting point.
3 Slightly lift the movable T-bar locking tab to increase the
space between the stationary and the slider T-bar sides
of the bracket. Then hook the stationary end of the T-bar
bracket onto the T-bar, as shown in Figure 6.
4 While holding the AP with one hand, reach the other
hand over the T-bar and grasp both the stationary and
movable sides of the bracket. Push the bracket parts
together so they both grasp the T-bar and the locking
tab clicks into place.
5 While still holding the AP, rock it back and forth to ensure
that it is securely mounted.
Figure 6 Attaching the AP3935 on a drop ceiling T-bar
rail
6 Make a hole through the ceiling panel closest to the
power slot on the AP. Run the Ethernet cable through the
hole and into an RJ45 LAN port in the recessed
connector bay.
7 If necessary, cut the tiles for the cables, attach the cables
to the AP, and replace the tiles. Then replace the
displaced ceiling panels.
Mounting on a Wall/Solid Flat Ceiling
1 Determine the spot on the wall to mount the AP (near
the ceiling, but in reach of the Ethernet cable and a wall
power outlet if you are using external power).
2 To mount the AP directly on the wall with two screws,
use the provided template and mark the two drill holes
on the wall. In drywall, the drill holes should be 6MM to
0.250" in diameter.
3 Drill two holes in the wall to match the center of the two
keyhole slots in the back of the AP bracket.
4 Screw the anchors into the holes until they are flush with
the wall, Screw the provided mounting screws into the
anchors with the head protruding 1/16” from the anchor.
5 Place the back of the AP against the wall with the
protruding mounting screw heads fitting through the
keyhole slots on the back of the AP. Slide the AP down
until the AP rests on the mounting screw heads.
6 For added stability and security, use a Kensington lock.
When mounting on the ceiling, a Kensington lock and
bracket are required.
Figure 7 Mounting the AP3935 to a Flat Wall.
Connecting a Power Supply to the AP3935
To power the AP3935 with optional (30512, WS-PSI12-MR2)
external 12V DC power supply, plug the power cord into the
power connector (Figure 4) on the back of the AP. There is
no wall mount for the 12V DC power supply. When the
device is powered on, the power LED on the front face of
the AP is lit.
LAN/Console Connections
The AP3935 has two LAN (Ethernet) ports and a Console
port. Refer to Figure 4 for the location of these ports.
During administration and maintenance, the AP must have
a power connection through either an Ethernet PoE cable
or a DC power supply.
External Antennas (WS-AP3935e Only)
Install the external antennas intended for area coverage.
For more information about the optional installation
bracket, the optional power supply, and antenna selection
and installation, refer to the ExtremeWireless AP3935
Installation Guide.
Note: You can mount the AP using an optional mounting
bracket (30513, WS-MBI-WALL03) to a flat ceiling.
Note: LAN/Console connectors with shrouds will not fit into
the ports. Remove the shroud or use an optional jumper
cable.