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Forced to use 10 Mbps Full Duplex (Speed & Duplex settings)

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I'm using the on-board NIC on my computer. It's a Realtek PCIe GBE Family Controller.

The network adapter will be disconnected unless I set the Speed & Duplex settings for the NIC to 10 Mbps Full Duplex. The NIC will stay disconnected if set to Auto Negotiation. Is my internet speed limited with these settings? I want the card to run as fast as my internet service allows, which is 100 Mbps, I think?

How do I fix this issue?

Here's information on the NIC:

Name	[00000009] Realtek PCIe GBE Family Controller	
Adapter Type	Ethernet 802.3	
Product Type	Realtek PCIe GBE Family Controller	
Installed	Yes	
PNP Device ID	PCI\VEN_10EC&DEV_8168&SUBSYS_84321043&REV_06\4&13526737&0&00A9	
Last Reset	1/11/2013 2:22 PM	
Index	9	
Service Name	RTLE8023xp	
IP Address	
IP Subnet	
Default IP Gateway	
DHCP Enabled	Yes	
DHCP Server	
DHCP Lease Expires	1/18/2013 1:01 PM	
DHCP Lease Obtained	1/11/2013 2:22 PM	
MAC Address	C8:60:00:C1:69:72	
I/O Port	0x0000C000-0x0000CFFF	
Memory Address	0xDC104000-0xDC104FFF	
Memory Address	0xDC100000-0xDC1FFFFF	
IRQ Channel	IRQ 17	
Driver	c:\windows\system32\drivers\rtenicxp.sys (5.790.0824.2011 built by: WinDDK, 316.23 KB (323,816 bytes), 12/12/2012 1:31 PM)

Edited by intelguy77, 11 January 2013 - 02:55 PM.

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Update: I've narrowed down that the issue is with the cable. I connected my laptop to the port on the router with a different cable, and I was getting 100 Mbps. So looks like I'll be doing some re-wiring. Issue resolved.
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