dir-655 lan speed

Hi here is a few things that is overlooked by a lot of people

Check what speed Hard drives you are using in your pc's if you are using 4800rpm or less then you will experiance a delay with transfer speeds as the hard drives become a bottleneck not your network I recommend at least 7200rpm for IDE or SATA. I have tested with my laptop on 1gb and with my PC my PC has 2 7200rpm sata drives and the laptop has a 5400rpm drive and my average speed transfer was 30-40 mb a sec 800mb file took 15 secs to transfer 10gb took under 10 mins

Also make sure you have enough memory in both machines or windows is going to use the Hard Drives to make up the memory it doesnt have and that will kill your speed of the computers and no matter how fast your network your network only runs as fast as the slowest link in the chain.

Have you run defrag on your hard drive recently you will find that badly fragmented drives will cause delay in network speed.

Have you tried looking for firmware updates for your network equipment updated your drivers for your Network Cards, check that full duplex is on in network connections for all your network cards

Check your network cables are not running to close if possible to power cables power cables which can create Electromagnetic interfernance and degrade the transmission speed making TCP/IP resend data constantly because of data loss also be aware that air con units, microwave ovens, flouresent tube lighting can cause interfernace too I dont know if all this applys to you but they can all degrade network signals.