Hi All
Firstly, apologies for previous mis-formatted message - I have to add "dell.com" to the list of compatibility sites in IE 11 for formatting to work!
I’ve recently purchased a Dell XPS 13 9333 (Core I7) with Windows 8.1 pre-installed. I have to say overall I’m very pleased with it. Build quality is very good. I use it both classically and with touch screen – so best of both worlds. Everything is now set up as I need, but I have one outstanding issue.
The problem is the on board Intel Dual Band Wireless-AC 7260 adapter will only connect at a maximum speed of 54Mbps (viewed from Network and Sharing Center) using 802.11g (viewed from task manager).
The router I have is a Netgear WNDR5400 (Dual Band up to 802.11n) set to WPA2-PSK (AES) only. The XPS 13 always connects at 54Mbps whether using 2.4Ghz or 5Ghz.
I'm not after 802.11ac speeds, but did expect to get better than 802.11g - i.e. 802.11n
I have tested a spare Netgear N600 Wireless Dual Band USB Adapter (WNDA3100v2) connected to the XPS 13 and this connects at 300Mbps using 802.11n every time. Some quick tests to a local Desktop PC (Gigabit connection from PC to router) shows I’m getting MUCH better than 54Mbps with this USB adapter.
So I’m convinced my router is OK and in principle the laptop (Windows 8.1) can run a faster wireless connection. The question is why can’t it do it with the on board adapter – having a USB adapter hanging out of one of the USB ports is not a long term option.
The latest Dell recommended drivers (10.8.0.6) are currently installed along with the Intel ProSet/Wireless Software (16.8.0). I have also tried removing the Dell recommended drivers (along with the ProSet/Wireless Software) and then loading the very latest drivers from Intel (16.10.0.5). To no affect.
In all cases it connects at 54Mbps saying 802.11g in task manager.
The XPS BIOS is up to date (A03)
The Intel Proset Manual Diagnosis tool runs all tests and passes with Signal quality "Excellent".
All tests are done within 10ft of router and in same room (no walls).
It's as if the device is capable, but the "Advanced" setting presented to the system (and me) don't include 802.11n setting correctly.
Does anyone have any thought about how to get this adapter to connect using 802.11n?
I've included output from Advanced Driver settings and NETSH below
The Driver Advanced setting are:-
802.11n Channel Width (band 2.4/band 5.2) – both Auto
Ad Hoc Channel 802.11 b/g – Set to “1”
Ad Hoc QoS Mode – Set to WMM Enabled
ARP offload for WOWLAN – set to enabled
Bluetooth® AMP – Set to disabled
Fat Channel Intolerant – Set to disabled
GTK rekeying for WOWLAN – set to enabled
HT Mode – set to VHT mode
Mixed Mode Protection – set to CTS to self enabled
NS offload for WOWLAN – set to enabled
Packet Coalescing – set to enabled
Preferred Band – set to no preference
Roaming Aggressiveness – set to medium
Sleep on WOWLAN disconnect – set to disabled
Transmit Power - set to 5 - highest
Wake on Magic Packet – set enabled
Wake on Pattern Match – set enabled
Wireless mode - set to 802.11a/b/g (no 802.11n available to pick)
The Netsh WLAN SHOW DRIVER output is:-
Interface name: Wi-Fi (Latest Intel Driver)
Driver : Intel(R) Dual Band Wireless-AC 7260
Vendor : Intel Corporation
Provider : Intel
Date : 28/01/2014
Version : 16.10.0.5
INF file : C:\Windows\INF\oem61.inf
Files : 3 total
C:\Windows\system32\DRIVERS\Netwbw02.sys
C:\Windows\system32\DRIVERS\Netwfw02.dat
C:\Windows\system32\drivers\vwifibus.sys
Type : Native Wi-Fi Driver
Radio types supported : 802.11b 802.11g 802.11n 802.11a 802.11ac
FIPS 140-2 mode supported : Yes
802.11w Management Frame Protection supported : Yes
Hosted network supported : Yes
Authentication and cipher supported in infrastructure mode:
Open None
Open WEP-40bit
Open WEP-104bit
Open WEP
WPA-Enterprise TKIP
WPA-Enterprise CCMP
WPA-Personal TKIP
WPA-Personal CCMP
WPA2-Enterprise TKIP
WPA2-Enterprise CCMP
WPA2-Personal TKIP
WPA2-Personal CCMP
Open Vendor defined
Authentication and cipher supported in ad-hoc mode:
Open None
Open WEP-40bit
Open WEP-104bit
Open WEP
WPA2-Personal CCMP
Interface name: Wi-Fi (recommended Dell Driver)
Driver : Intel(R) Dual Band Wireless-AC 7260
Vendor : Intel Corporation
Provider : Intel
Date : 05/12/2013
Version : 16.8.0.6
INF file : C:\Windows\INF\oem61.inf
Files : 3 total
C:\Windows\system32\DRIVERS\NETwbw02.sys
C:\Windows\system32\DRIVERS\Netwfw02.dat
C:\Windows\system32\drivers\vwifibus.sys
Type : Native Wi-Fi Driver
Radio types supported : 802.11b 802.11g 802.11n 802.11a 802.11ac
FIPS 140-2 mode supported : Yes
802.11w Management Frame Protection supported : Yes
Hosted network supported : Yes
Authentication and cipher supported in infrastructure mode:
Open None
Open WEP-40bit
Open WEP-104bit
Open WEP
WPA-Enterprise TKIP
WPA-Enterprise CCMP
WPA-Personal TKIP
WPA-Personal CCMP
WPA2-Enterprise TKIP
WPA2-Enterprise CCMP
WPA2-Personal TKIP
WPA2-Personal CCMP
Open Vendor defined
Authentication and cipher supported in ad-hoc mode:
Open None
Open WEP-40bit
Open WEP-104bit
Open WEP
WPA2-Personal CCMP
IHV service present : Yes
IHV adapter OUI : [00 80 86], type: [7200]
IHV extensibility DLL path: C:\Windows\System32\IWMSSvc.dll
IHV UI extensibility ClSID: {1bf6cb2d-2ae0-4879-a7aa-a75834fbd0e3}
IHV diagnostics CLSID : {00000000-0000-0000-0000-000000000000}