whats the difference between UC optimized and microsoft optimized version?

I have both versions, as far as compatibility with WebEx on USB connection - both the MS and UC versions seem to work identically. They both synchronize the mute button / LED lights on the unit with the mute icon in WebEx. They were also able to be paired to each other (one 710UC and one 710MS) for stereo conferencing / across the room from each other.

does this work with Mac?

Works perfect, bit you hace to select it like you Chanel for sound in and out, in System Preferences, I'm working in Yosemite in laptop and Mavericks in desktop.

Can I connect the 510 to my PC via Bluetooth, or is the bluetooth just for mobile devices and USB is for PC/Mac?

i received the 510 and it connects to my laptop (using built in BT), but it doesnt seem to show anywhere as a usable device. Its not listed in my sound options as a general or communication device or show in my various Softphone related applications. It does show in my devices and printers list as a headset, but that is the only place it shows up.From what i have read it may need the Jabra Link 360 to work as a BT device on a PC? If you were able to set it up on your PC without this device can you provide more details if you had to do anything special?

How long is the cord?

I did not measure, but the cord appears to be approx. 3-4' long. It would definitely be nice if it was longer. It barely reaches from my computer tower to under my monitor (but i have a big desk).My recommendation is to buy a cheap usb entension cable from amazon or ebay.

Input Voltage	120 Volts
Mounting Type	Tabletop Mount
Material	Plastic
Model Name	Jabra SPEAK 410
Speaker Type	Bookshelf
Special Feature	Portable
Recommended Uses For Product	For Computers
Compatible Devices	Personal Computer
Subwoofer Diameter	5 Inches
Surround Sound Channel Configuration	2 1
Colour	Black
Included Components	carry pouch
Product Dimensions	11D x 21W x 21H Centimeters
Item Weight	0.19 Kilograms
Is Waterproof	false
Maximum Range	10 metres
Number of Items	1
Control Method	Touch
Wireless Communication Technology	Bluetooth
Speaker Size	3.5 Millimetres
Power Source	Corded Electric
Woofer Diameter	3 Centimetres
Tweeter Diameter	1 Inches
Water Resistance Level	Water Resistant
Customer Package Type	Standard packaging
EU Spare Part Availability Duration	2 Years
Number of Batteries	1 C batteries required.
Audio Driver Type	Dynamic Driver
Subwoofer Connectivity Technology	Wireless
Number Of Circuits	1
Specific Uses For Product	personal
UPC	650415478729 737069181707 706487011989 791836597665 013269003309 013686000042
Style	Speak 410
Global Trade Identification Number	00706487011989, 00791836597665, 04052305285480, 05706991013153
Manufacturer	Jabra
Batteries	1 C batteries required.
Item model number	7410-209
Wattage	3600 Kilowatt Hours
Hardware Platform	PC
Battery Charge Time (in hours)	5 32nds
Average Battery Life (in hours)	15 Hours
Are Batteries Included	No
Lithium Battery Energy Content	4.9 Watt Hours
Lithium Battery Weight	0.2 Grams
Number of Lithium Ion Cells	2
Number of Lithium Metal Cells	1
Country of Origin	USA
Item Weight	185 g

Speak 410 UC Speakerphone

Details

Description

Specifications

Common Questions