Two different wiring standards exist for wired Ethernet: T568A (A wiring) and T568B (B wiring). The straight-through patch cables offered by StarTech.com adhere to the T568B standard.
For more information on straight-through versus crossover Ethernet cables, refer to the following FAQ: http://www.startech.com/faq/network_cables_straight_through_vs_crossover.
For more information on Ethernet wiring, refer to the following FAQ: http://www.startech.com/faq/network_cables_a_vs_b_pinout.