WLAN card in WWAN PCI slot

[UnknownBeing]

Is it possible to put a full sized wireless card in the slot where the WWAN card goes in a T420? I've searched and the only thing I could find was for SSDs. I flashed my bios to get rid of the white-list and the OS doesn't seem to recognize it.

[lembang]

i do believe its do able. I never tested myself. I run msata on that port.
but in theory if wwan work, wifi card should work as well. If you already done the bios whitelist, have you checked the driver?

Just a question what 2 wifi card you are running?

[UnknownBeing]

I already have the white-listed bios, I tried two different wireless cards and neither works. I'm not sure of the exact models but one was pulled from a Macbook Pro, the other was from a Mac Pro

[RealBlackStuff]

I doubt it'll work.
Below are the 56-pin connections for WWAN and WLAN.
Try them for comparison, unless you find T420 schematics.

Sort them out in a spreadsheet and have fun!

WWAN left side (top to bottom)
52 +3.3V
50 GND12
48 +1.5V_2
46 LED_WPAN#
44 LED_WLAN#
42 LED_WWAN#
40 GND11
38 USB_D+
36 USB_D-
34 GND9
32 SMB_DATA
30 SMB_CLK
28 +1.5V_1
26 GND6
24 +3.3VAUX
22 PERST#
20 DISABLE#
18 GND4
16 UIM_VPP
14 UIM_RESET
12 UIM_CLK
10 UIM_DATA
8 UIM_PWR
6 1.5V
4 GND1
2 3.3V
53 PEG1
55 NC1
=============== following is right side WWAN top to bottom
RESERVED10 51
RESERVED9 49
RESERVED8 47
RESERVED7 45
GND_43 43
+3.3V_41 41
+3.3V_39 39
GND_37 37
GND10 35
PETP0 33
PETN0 31
GND8 29
GND7 27
PERP0 25
PERN0 23
GND5 21
UIM_C4 19
UIM_C8 17
GND3 15
REFCLK+ 13
REFCLK- 11
GND2 9
CLKREQ# 7
COEXISTENCE_2 5
COEXISTENCE_1 3
WAKE# 1
PEG2 54
NC2 56



WLAN left side
52 +3.3V
50 GND12
48 +1.5V_2
46 LED_WPAN#
44 LED_WLAN#
42 LED_WWAN#
40 GND11
38 USB_D+
36 USB_D-
34 GND9
32 SMB_DATA
30 SMB_CLK
28 +1.5V_1
26 GND6
24 +3.3VAUX
22 PERST#
20 DISABLE#
18 GND4
16 UIM_VPP
14 UIM_RESET
12 UIM_CLK
10 UIM_DATA
8 UIM_PWR
6 1.5V
4 GND1
2 3.3V
53 PEG1
55 NC1
=============== following is right side WLAN
RESERVED10 51
RESERVED9 49
RESERVED8 47
RESERVED7 45
GND_43 43
+3.3V_41 41
+3.3V_39 39
GND_37 37
GND10 35
PETP0 33
PETN0 31
GND8 29
GND7 27
PERP0 25
PERN0 23
GND5 21
UIM_C4 19
UIM_C8 17
GND3 15
REFCLK+ 13
REFCLK- 11
GND2 9
CLKREQ# 7
COEXISTENCE_2 5
COEXISTENCE_1 3
WAKE# 1
PEG2 54
NC2 56