1. March 2010 Gig Zero Delay Tap

2. TP-CU3-ZD The Gig Zero Delay Tap is TP-CU3 enhanced with the industry’s first TRUE Zero Delay technology for 10/100/1000 speeds Competitive products have made progress on keeping links up and avoiding lengthy re-negotiation sequences, but they drop packets when power goes up and down

3. TP-CU3-ZD vs. TP-CU3 Same panel size: Three units in 1U frame, or 12 units in 4U frame -ZD is slightly longer Same function: 10/100/1000 copper half-duplex breakout Tap Same modes: Auto-negotiate or fixed speed (same DIP switches) Both have dual redundant power supplies Different “brick” power supply, AC and DC models Storage temperature: 45ºC vs. 70ºC Different price

4. Features and Benefits Provides passive access at 10/100/1000 Mbps without data stream interference—even during power up/down—or introducing a point of failure Permanent in-line installation without affecting network performance Link Fault Detect prevents undetected link failures Passes all full-duplex traffic (including errors) from all layers for comprehensive troubleshooting No IP address is needed for the Tap or monitoring device, enhancing monitoring security Redundant power ensures monitoring uptime Fully IEEE 802.3 compliant Fully RoHS compliant

5. Zero Delay Technology Industry’s first TRUE Zero Delay technology (no packets lost) for Gigabit speeds Battery keeps network ports up for at least 3 hours Battery does not power monitor ports – monitoring is lost when power is down Internal charge circuitry keeps battery charged Automatic battery cycling extends battery life – 3 years expected in the field Relays keep network open (like TP-CU3 operation) if the power outage exceeds the battery hold-up time Same ZD technology for 10/100, 10/100/1000, and Gigabit speeds, fixed and auto-negotiate

6. Net Optics, Inc. www.netoptics.com 408.737.7777 Thank you!