This desktop and internet works by RJ45
And I let you note you , It was working very fine. I use to update windows using same wireless connectivity and some updates use to fail, when ever i switched to physical wire every update is a success and which might distrubed this d-link adapter, don't know exactly anyway i'm providing full sys spec.
More details about my computer
Processor Intel(R) Core(TM)2 Duo CPU E7300 @ 2.66GHz
Memory (RAM) 4.00 GB
Graphics NVIDIA GeForce 9800 GT
Gaming graphics 2815 MB Total available graphics memory
Primary hard disk 68GB Free (101GB Total)
Windows Vista (TM) Ultimate
System
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Manufacturer Gigabyte Technology Co., Ltd.
Model EP43-S3L
Total amount of system memory 4.00 GB RAM
System type 64-bit operating system
Number of processor cores 2
Storage
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Total size of hard disk(s) 298 GB
Disk partition (C
68 GB Free (101 GB Total)
Disk partition (D
20 GB Free (198 GB Total)
Media drive (E
CD/DVD
Media drive (G
CD/DVDCD/DVD
Graphics
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Display adapter type NVIDIA GeForce 9800 GT
Total available graphics memory 2815 MB
Dedicated graphics memory 1024 MB
Dedicated system memory 0 MB
Shared system memory 1791 MB
Display adapter driver version 8.15.11.9038
Primary monitor resolution 1680x1050
DirectX version DirectX 10
Network
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Network Adapter Realtek RTL8168B/8111B Family PCI-E Gigabit Ethernet NIC (NDIS 6.0)
Network Adapter Bluetooth Device (Personal Area Network)
Network Adapter Microsoft Tun Miniport Adapter
Due to always disabled state my network adapter has not been shown here