Marie Myers
Chief Financial Officer at HP
Thanks, Enrique. Looking at our third quarter financial results, we delivered another solid quarter of revenue growth with operating profit and EPS growing substantially faster. We are continuing our transformation journey, while generating strong free cash flow returning significant capital to shareholders and investing for long-term value creation.
Looking at the details of Q3, net revenue was $15.3 billion, up 7% nominally, and 4% in constant currency. Regionally, in constant currency, Americas increased 12%, EMEA increased 1%, and APJ declined 6%. Supply chain constraints affected both print and Personal Systems revenue. And this was particularly impactful in EMEA and APJ in Personal Systems. Across Personal Systems and Print, we continue to see strong demand for our products and solutions. Capitalizing on opportunities, we see as the hybrid world takes shape.
The gross margin was 22.2%, up 5.5 points year-on-year. The increase was primarily driven by continued favorable pricing, including lower promotions as well as a reduction to previously estimated sales and marketing program incentives as well as currency, partially offset by higher costs. Non-GAAP operating expenses were $1.9 billion, or 12.4% of revenue. The increase in operating expenses was primarily driven by increased investments in go-to-market and innovation, as well as higher variable compensation due to the very strong performance this fiscal year as compared to 2020.
Non-GAAP net OI&E expense was $78 million for the quarter. Non-GAAP diluted net earnings per share increased $0.51 to $1, including $0.25 related to the reduction in previously estimated incentives of which $0.12 were reinvested during the quarter, primarily an accelerating R&D incremental marketing and a hybrid work strategy. Non-GAAP diluted net earnings per share excludes net expense totaling $19 million, primarily related to restructuring and other charges, amortization of intangibles, acquisition-related charges, debt extinguishment costs, other tax adjustments, partially offset by non-operating retirement-related credits. As a result, Q3 GAAP diluted net earnings per share was $0.92.
Before I get into the details of the segments, let me briefly address the reduction in previously estimated sales and marketing program incentives. Consistent with our policies, we review these estimates every quarter. We estimate incentives based on a number of factors like historical experience, customer behavior and market conditions. The change in estimate is a result of lower-than-expected incentives due to increased supply constraints, shifts in customer behavior and the evolving impact of the COVID-19 pandemic. As a result, it became clear that we had to make it unusually large change in estimate in Q3.
Now let me turn to segment performance. In Q3, Personal Systems revenue was $10.4 billion flat year-over-year as supply chain challenges continue to constrain our growth. Demand for our products remain strong with backlog increasing again sequentially, despite substantially clearing the current backlog. Drilling into the details. Consumer and Commercial revenue was up 3%, and down 1%, respectively. By product category, revenue was flat for notebooks, up 1% for desktops, and down 9% for workstations. Total units were flat year-over-year. We also drove double digit growth in both consumer peripherals and services attach across consumer and commercial.
Personal Systems delivered $869 million in operating profit and operating margins of 8.4%. The operating margin improved 2.9 points, primarily due to favorable pricing, including the reduction in estimated incentive and currency partially offset by higher costs including commodity cost, investments in innovation, in go-to market and variable compensation.
In Print, our results reflected continued focus on execution and the strength of our portfolio. We are uniquely positioned as leaders in both consumer and commercial and have the hardware supplies and services to deliver value in a hybrid world. Q3 total print revenue was $4.9 billion, up 24% driven by strong growth in support, hardware and services. Total hardware units declined 4%, due to manufacturing and component constraints primarily in consumer printers. We expect these Q3 constraints to impact Q4 as well.
Our customer segment consumer revenue was up 15%, with units down 8%, and commercial revenue and units were up 46% and 29%, respectively. Consumer demand remains strong. However, revenue particularly A4 laser was constrained by supply and factory disruptions. The commercial recovery continued with a double digit hardware revenue growth in office and triple digit increases in Industrial printing hardware. Given what we're seeing with the Delta variant and evolving hybrid models, we still expect the recovery to be gradual and uneven at times across segments and geographies.
Supplies revenue was $3.1 billion, the 20% year-on-year growth was driven by inventory replenishment, stronger commercial demand and favorable pricing. Our contractual business is a key element of our print strategy in both consumer and commercial printing. In consumer, our Instant Ink business model continue to resonate well with customers with strong double digit revenue and subscriber growth. On the commercial side, we drove growth in managed print services revenue and total contract value with particular strength in new TCP bookings. Print operating profit increased $377 million to $857 million and operating margins were 17.6%. Operating margin grew 5.4 points driven primarily by favorable pricing, including the reduction in estimated incentives, higher volumes in commercial hardware, including graphics and 3D partially offset by unfavorable mix and higher costs, including commodity costs, investments in innovation and go-to market and variable compensation.
Let me now turn to our transformation efforts and our cost savings initiatives. In the second year of our program, we continue to look at new cost savings opportunities and remain ahead of our $1.2 billion gross run rate structural cost reduction plan. Our hybrid work strategy is one example. It has enabled us to accelerate a location strategy while providing a more flexible workspace. Going forward, we are enabling HP's hybrid work strategy by monetizing our sites to be critical hubs for collaboration and innovation. This will also deliver savings in our real estate portfolio.
In addition to our progress on our location strategy, we are making progress in our digital transformation. We are enhancing and leveraging our digital capabilities to transform the ways we operate and deliver value to our customers. In the third quarter, we completed the initial deployment over SAP S4 Hana system, one of the largest ERP implementations. Also as part of our end-to-end business planning and forecasting efforts, we also went live with our new cloud-based platform, which we believe will improve our forecasting agility is part of our digital transformation. The structural cost savings from our transformation efforts are a key enabler of reinvesting in our business for long-term growth and profitability.
Shifting to cash flow and capital allocation. Third quarter cash flow from operations and free cash flow were $1.1 billion and $1 billion, respectively. In Q3, the cash conversion cycle was minus 29 days. Sequentially, the cash conversion cycle improved one-day as higher days payable outstanding more than offset the increased days of inventory due to growth in inventory across PS and print and the one-day increase in days sales outstanding. For the quarter, we returned a total of $1.7 billion to shareholders, which represented 178% of free cash flow. This included $1.5 billion in share repurchase and $230 million in cash dividends. Looking forward, we expect to continue to aggressively buy back shares at elevated levels of at least $1.5 billion in Q4.
Looking forward to the fourth quarter, we continue to navigate supply availability and logistics constraints, pricing dynamics and the pace of economic reopening. In particular, keep the following in mind related to our overall financial outlook. For Personal Systems, we continue to see strong demand for our PCs, particularly in commercial. In Print, we expect solid demand in consumer and a mix shift as commercial continues to improve. For both Personal Systems and Print, we expect the component shortages, as well as some manufacturing, port and transit disruptions will continue to constrain revenue due to the ongoing pandemic and resurgence driven by the Delta variant.
Taking these considerations into account, we are increasing our Q4 and FY '21 EPS. We expect fourth quarter non-GAAP diluted net earnings per share to be in the range of $0.84 to $0.90, and fourth quarter GAAP diluted net earnings per share to be in the range of $0.82 to $0.88. We expect full year non-GAAP diluted net earnings per share to be in the range of $3.69 to $3.75, and FY '21 GAAP diluted net earnings per share to be in the range of $3.56 to $3.62. For FY '21, we expect our free cash flow to be at least $4 billion.
And now I would like to hand it back to the operator and open the call for your questions.