cross cable ,hub, router,pc.

crossover cable can connect to similar devices like

PC <> PC
hub <> hub
switch <> switch
Router <> Router

Data Terminal Equipment (DTE) and Data Communications Equipment (DCE) cross their transmits and receives on pins 1, 2, 3, and 6.

In order for two devices to communicate, Transmit goes to Receive, and vice versa.  If a DCE goes to DTE or vice versa, everything is fine.

If two like devices try it, they need the wire to physically cross the similar PIN out.

A lot of newer equipment can do it automatically - called Auto MDI/X or Autodetect.

A cross over cable has T568-A pinout (white green on ping 1) on one end, and T568-B pinout (white orange on pin 1) on the other.

Hope this helps.

good day,
plz check if ur case is one of those cases down, and it must be, else their must be something wrong

NIC to NIC:
-NIC to NIC - Crossover Cable
-NIC to Hub - Straight (regular) Cable
-NIC to Uplink - Crossover Cable
 
Hub to Hub:
-Hub (regular) to Hub (regular) - Crossover Cable
-Hub (regular) to Hub (Uplink) - Straight (regular) Cable
 
DSL/Cable Modem to Uplink port on a DSL/Cable Router (WAN port):
-If your Modem came with a Straight Cable:
-Modem to NIC - Straight (regular) Cable
-Modem to Hub - Crossover Cable
-Modem to Uplink - Straight (regular) Cable  

If your Modem came with a Crossover Cable:
-Modem to NIC - Crossover Cable
-Modem to Hub - Straight (regular) Cable
-Modem to Uplink - Crossover Cable  

Like these experts say, to home use, today you almost dont need to distinguish the cross over or straight cable, but in one common case : pc <> pc

as already stated most are smart now so shouldn't be a problem.

but general rule of thumb.
Like devices = Cross over,
Different = Straight through

sorry , i give all point to the first people who give me the right answer .

.

thanks :)