inspiron 570 network adapter upgrade

[Tom4342]

Are there any ethernet upgrades for this old rig?I have a broadcom 1 gig in there now and think its having issues keeping up with my new verizon modem

 

[ffg7]

Wireless (optional) PCI Express WiFi card supporting 802.11a/b/g/n
http/downloads.dell.com/manuals/common/inspiron-560_user%27s%20guide_en-us.pdf
Service Manual http/downloads.dell.com/manuals/common/inspiron-560_service%20manual_en-us.pdf
or just buy a "n" or "ac" series usb wireless adapter for about $20 & up.