Ultra-Fast Wi-Fi - DSL-AC88U features Nitro QAMTM (1024-QAM) technology to deliver a combined speed of up to 3167Mbps for bandwidth-intensive tasks. Future-proof DSL Compatibility - Supports ADSL, ADSL 2/2+, VDSL2, and the latest G. fast broadband connections. Total Flexibility with DSL or Ethernet Internet Connections - DSL-AC88U has multiple ways to connect to the internet with a choice of DSL for an ADSL/VDSL connection or an Ethernet port for any fiber or cable-based modems, which makes it ideal for a future ISP upgrade.