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Category 3 is the performance level for voice and data transmission up to 16 MHz or 10 Mbps, such as 4-Mbps Token Ring and 10BASE-T. Category 4 is the... more/see it nowperformance level for voice and data transmission up to 20 MHz or 16 Mbps, such as 4-/16-Mbps UTP. Both offer solid performance, and Black Box guarantees their reliability. But if you think you may be upgrading your network within the next few years, consider Category 5 cable. It offers more speed and versatility than Category 3 or 4 at a minimal cost difference. collapse
Delivering superior technical support is our highest priority. Depending on the products or services we provide for you, please visit your appropriate support area.