Dell Studio 1557 (Late 2009) - Manual (Page 87)

85
Specifications
Connectors
Audio one microphone‑in
connector and two
stereo headphones/
speakers connectors
IEEE 1394a one 4‑pin mini, non‑
powered connector
Mini‑Card one Type IIIA full
Mini‑Card slot, one
half‑size Mini‑Card slot
HDMI 19 pins
Network adapter one RJ45 connector
eSATA one seven‑pin/four‑pin
eSATA/USB combo
connector
USB two four‑pin USB
2.0‑compliant connectors
Video one 15‑hole connector
Communications
Modem type
(optional)
external V.92 56K USB
modem
Modem controller hardware modem
Modem interface USB
Network adapter 10/100/1000 Ethernet LAN
on system board
Wireless WLAN, WiMax a/b/g/n
and WWAN ExpressCard
with Bluetooth ® wireless
technology