USCIS Application Support Center

I arrived at my appointment early, at about 9:30am for a 10am appointment. I was unsure if they even accepted early birds (some gov’t offices don’t) but not only did they accept me but I HIGHLY recommend everyone else to do the same.
The first security guy I met at the door, the one in charge of checking everyone’s documents and letting us into the building was the NICEST gov’t worker I’ve ever encountered. He had the biggest smile and cracked jokes with everyone who came through. He didn’t even seem to tire of telling people to go take their cell phones and bags back to the car even though there were signs clearly stating that and it was also included in the original appt letter that we all got. It seems most people just simply cannot follow instructions. :/​He must see thousands of people a day, having to tell them the exact same thing, yet he was incredibly pleasant.
Inside, you’re made to tow two lines in order to 1) get paperwork to fill out (one short page) and 2) to show all your documents and paperwork to someone who will assign you a number.
Then you move over to another seating area and wait for your number to be called. Once you’re called you go into a room to have fingerprints and a photo taken and to sign electronically.
They also give you a survey card to complete. And that’s it! I’d say I waited about 5mins in each of the two lines, less than 10mins for my number to be called and maybe 10mins for the actual biometrics to be taken. I ended up walking out of there BEFORE 10am which was the time of my original appointment. Everything couldn’t have gone smoother and I must give it up to them for their efficiency and courtesy. I was impressed.
I will say that I think I came in a good time though because as I was leaving the line had started to form outside the door which was amazing to me since I only had about 20 – 25 people on each line I was on. But, even so, the lines move very quickly so that’s not an issue. My advice, get there at least thirty minutes ahead of your appointment, LEAVE ALL DEVICES AND BAGS IN THE CAR (only wallets permitted), and don’t fill out your paperwork while in line, some people got yelled at for that. Fill it out completely before joining the line. Follow those rules and you’ll be out before you know it.

I recently had to go to the USCIS Application Support Center and was very surprised by the excellent service I received.
Due to having to be on crutches, the guard at the entrance kindly sat me down right away, so I did not have to stand on my crutches in line.
The guard even brought me the form to fill out and then processed me to the next area.
It was not long until the next official saw me and then I was directed to have my finger prints and picture taken and once again, because they saw that I was on crutches, I was seen right away.
The lady who took my prints and picture was kind and helpful. I did not expect any special treatment because of my current condition but the staff at the Support Center were all very accommodating and I thank them for their kindness.

I have been to this USCIS application support center three times so far, but my experience has been mostly positive. All three times, I went there for bio-​metric appointments — twice for UK visa and once for permanent resident application.
The entrance for the application support center is in the back of the building, where you will find plenty of parking spot. One thing to note is, you cannot take cellphone or any electronics inside the building. so leave it in car and save the time you will spend again in the line, when they turn you back. And handbags, big purses are not allowed as well, but wallet and documents folders are fine.
You need to have your passport, regardless of whether you bring driver’s license or permanent resident card. When the line is not too full, they will allow people before their appointment time but when they are busy they usually stick to the time in your appointments.
Military Personal services provided from 9 am to 3 pm Monday-​Friday and NO APPOINTMENT is needed.
There is another line inside as well where depending on your purpose of visit, one might have to fill in certain information. For biometric appointments for UK visa, the payment is done online and no paperwork need to be filled in at the center. Though the printed application needs to be carried, just in case. They will provide a number after you fill in the document and wait for your number to be called.
On leisurely day, expect to spend about 30 – 40 minutes but it could get longer in busy days. The process is quite streamlined and unbiased. And yes, they have restroom inside the center as well. Once your purpose of visit is over, you will exit through ‘Exit’ door on your left.