Question 1

Does this use DDR2 or DDR3 memory?

Accepted Answer

DDR2 Synch DRAM Non-ECC Memory 667MHz or 800MHz speeds

Question 2

Is this a SATA Drive and are other SATA ports avaliable?

Accepted Answer

I believe this is a SATA drive.

However -- this system is really really bad. I highly advise you keep looking. Here's why.

- The BIOS/Firmware is outdated. You will need to re-flash it before you will have any hope of fixing the bigger issue, which is:

- The Intel drivers log data to the registry, and over time this builds up and results in unusable boot times. Google "slow boot Optiplex 755".

This is one of two computers I've had in my life time that I've discarded because they were hopeless time sucks. I work in IT/Technology full time, and am very familiar with debugging. After spending a couple of hundred dollars on this system, I squandered at least a thousand dollars of my time before I cut my losses and gave up.

I may try Linux on this box at some point, but it WILL NOT run the OEM Windows that comes with it in a reasonable way. Again, I highly recommend you do the google search I mentioned above before you decide to buy this.

Question 3

Is this a SATA drive, and are there more SATA ports available?

Accepted Answer

Yes, it uses SATA and has at least one spare SATA port for additional drives. I don't remember how many more as this was a gift for my aunt, but I would imagine it has a total of at least 4-6 which is standard. It is using one for the CD/DVD, and one for the HDD. You will need to supply your own SATA cable for any additional drives.

Question 4

Does this computer have a pci slot or slots?

Accepted Answer

It has 2 standard PCI slots, 1 PCI-E and a slot for a video card.

Question 5

Can I connect two monitors to this unit?

Accepted Answer

No, there is only one VGA input with no other video input connections.  There is one available PCI slot.  Also, there are no PS/2 inputs so key board and mouse must be USB or wireless.  There are 8 USB slots (6 in back and 2 in front)

Question 6

What connections are there for a second hard-drive?

Accepted Answer

Generally Dell computers are available in 3 sizes: mini-tower, small form factor, and ultra small form factor.   The small form factors can sit on the desk horizontally or vertically.  I've purchased many refurb 755's for a non-profit.  The  mini tower (the one pictured) has a slot for a second hard drive and the power plug for it.  There are two additional data ports on the system board.  You have to supply the data cable and possibly the blue plastic hard drive caddy.  Neither the small form factor or ultra small form factor support a second hard drive

Question 7

Can I hook to the internet ?

Accepted Answer

Yes, either by ethernet or by WiFi antenna via usb.

Question 8

What Intel Core Duo processor is it?  There are more than one that run at 2.66GHz.

Accepted Answer

Mine was E7300..

Question 9

Does this 755 have room (slots) for a wireless ethernet and/or a video card?  Jon

Accepted Answer

Yes it does. It has PCI/PCI-E slots available to add both if you wanted.

Brand	DELL
Series	OptiPlex
Model	755

Type	Business Desktops & Workstations
Form Factor	Tower
Usage	Business
Color	Black/Silver
Processor	Intel Core 2 Duo 2.66GHz
Memory	4GB
Storage	1TB
Optical Drive	DVDRW
Graphics	Intel GMA 3100
Audio	ADI 1984 High Definition integrated audio
Ethernet	Gigabit Ethernet
Power Supply	305W
Monitor	Monitor not included
Operating System	Windows 10 Pro 64-Bit

CPU Type	Core 2 Duo
CPU FSB	1333 MHz
CPU Name	2.66GHz
CPU Base Frequency	2.66GHz
L2 Cache Per CPU	6 MB
CPU Socket Type	LGA 775

GPU/VGA Type	Intel GMA 3100
Graphics Interface	Integrated video

Memory Capacity	4GB
Memory Slot (Total)	4
Memory Slot (Available)	0
Memory Slots (Available/Total)	0/4
Maximum Memory Supported	8 GB

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PS/2	0
Video Ports	1 VGA
Rear USB	6
RJ45	1 port
Rear Audio Ports	2 ports

External Bays	3
Internal Bays	2
PCI Slots (Available/Total)	1 PCI Express x16 slot, 1 PCI Express x1 slot, 2 PCI slots

Item#: 9SIA6AB2CC9637