Nvidia has expanded its lineup of chipsets aimed at Intel processors. The new nForce4 SLI XE and nForce4 Ultra are mainstream and low-end products that should allow makers to offer socket 775 mobos ranging from USD 90 to USD 100. The XE supports SLI mode, but limited to two x8 slots, while the Ultra offers a single x16 connector. Other features include 1066 MHz frontside bus, dual channel DDR2-667 memory, up to four Serial ATA 3 Gb/s ports, four ATA-133 ports, ten USB 2.0 ports, 8-channel audio and native Gigabit Ethernet. In comparison to the nForce4 SLI and SLI x16, however, the XE and Ultra lack hardware accelerated firewall.