Huawei E587 features:

Platform Type: MDM8220
Form: Modem
Operating frequency(3G): DC-HSPA+/HSPA+/ HSPA/UMTS 2100/900 MHz
Operating frequency(2G): EDGE/GPRS/GSM 850/900/1800/1900 MHz
Speed: HSUPA 5.76Mbps; DC-HSPA+ 43.2Mbps
Interface: Micro USB
Dimension (L x W x H): 102.0mm× 56.0mm× 15.5mm
Weight: 110g
Receive Diversity: DC-HSPA+/HSPA+/ HSPA/UMTS 2100/ 900 MHz
Equalizer: Yes
LED: OLED
Battery: 2200mAh
Internal Memory: 128MB Flash, 32MB SD-RAM
Micro SD card slot: : Yes (Up to 32GB)
Built-in Antenna: Yes
WiFi: 802.11. B/g/n
Encryption: WEP, WPA, WPA2
OS: Huawei E587 MiFi Hotspot supports Windows XP, Windows Vista, Windows 7, Mac OS X 10.5, Mac OS X 10.6