RJ Digital Alliance is a computer hardware retailer based at Lamington Road, Mumbai, trading since 2021. We sell over the counter and online, we build custom PCs, we repair machines, and we supply businesses in bulk — the same stock, the same people, whichever way you buy.
Counted from the live catalogue, so this paragraph cannot become out of date without the number moving with it.
14,672 products published on this site — Products published on this website. Being published is not the same as being in stock.
Products from 211 brands — Distinct brands that have at least one published product. It is not a statement of dealership or authorisation.
403 categories holding published products — Categories holding at least one published product, directly or through a child category. Empty categories are excluded.
Counted 15 November 2026 at 03:56 am IST, directly from the live catalogue.
The business is RJ Digital Alliance. That is the name on our invoices, our Merchant Center account and our Google Business Profile, and the only name we trade under.
This website, www.rj-quantum.com, is RJ Digital Alliance's own web address. Everything you buy here is sold, invoiced, delivered and supported by the same shop and the same team.
What we do
We stock laptops, gaming and office desktops, graphics cards, processors, motherboards, RAM, SSDs and hard disks, power supplies, cabinets, cooling, monitors, keyboards, mice, printers, networking equipment and accessories, alongside refurbished laptops.
We assemble custom PCs to specification and check part compatibility before building. We repair and upgrade computers and laptops, including machines not bought from us. And we supply businesses, schools, hospitals and government buyers in bulk with GST invoicing and tier pricing.
Prices shown on the website are live and GST-inclusive. Stock status is shown per product. You can order online for delivery across India, or collect from the counter the same day once stock is confirmed.
Payment is taken through the methods listed at checkout (UPI, Credit Card, Debit Card, Net Banking). Every order can be invoiced with GST. Verified business accounts see their own tier pricing automatically after GST verification.
Warranty and condition are stated on each individual product page rather than promised in general, because they genuinely differ between new, open-box and refurbished stock.
Registered place of business: Shop No. 2, Lamington Road, Grant Road East, Mumbai, Maharashtra 400007, India.
GSTIN: 27AXAPC3784A1ZX.
Trading since 2021.
Website operated by RJ Digital Alliance at www.rj-quantum.com.
Our full customer policies — privacy, terms, returns, refunds, shipping, warranty, pricing and acceptable use — are published in the footer of every page and linked below.
RJ Digital Alliance, the computer shop at Lamington Road, Mumbai. One company, one shop, one team: the website, the counter, the workshop and the business desk are all us.
Is this a real shop I can visit?
Yes. Our counter is at Lamington Road, Mumbai, open Mo-Sa 10:00-21:30. You can buy over the counter, collect online orders and bring devices in for repair.
How long have you been trading?
Since 2021, selling computer hardware to consumers and businesses.
Do you issue GST invoices?
Yes, on any order. Provide your GSTIN at checkout or when requesting a quotation and it will appear on the invoice.